Bem-vindo ao NeoToolkit

Gerador de Banner de Consentimento de Cookies

Gere banners de consentimento de cookies personalizáveis e conformes com GDPR e CCPA com código HTML/CSS/JS pronto para uso. Personalize cores, posição, texto e rótulos de botões instantaneamente.

Privacy Policy Generator

Generate a professional, customizable privacy policy for your website or app. GDPR, CCPA, and COPPA compliant templates tailored to your business. Copy as HTML or plain text.

Terms of Service Generator

Generate a professional, customizable terms of service agreement for your website, app, or SaaS. Tailored to your business type with user accounts, payments, and content policies. Copy as HTML or plain text.

Open Source License Generator

Free online open source license generator. Create MIT License, Apache License 2.0, GPL v3, BSD 3-Clause, ISC, MPL 2.0, and The Unlicense instantly. Fill in your name and year, copy to clipboard, or download as a LICENSE file. Pure client-side.

Refund Policy Generator

Generate a professional, customizable refund and return policy for your business. Tailored to your products, refund timeframes, and conditions. Copy as HTML or plain text.

Disclaimer Generator

Generate a professional, customizable disclaimer for your website, blog, app, or online service. Cover liability, affiliate relationships, medical, financial, and legal topics with tailored clauses.

EULA Generator

Generate a professional End User License Agreement (EULA) for your software, mobile app, SaaS, game, or plugin. Customizable for desktop, mobile, web applications, and more. Free, instant, and client-side.

Acceptable Use Policy Generator

Generate a professional Acceptable Use Policy (AUP) for your website, SaaS, online community, network, or platform. Define permitted and prohibited use, enforcement actions, and user responsibilities. Free, instant, and client-side.

DMCA Policy Generator

Generate a professional DMCA (Digital Millennium Copyright Act) policy for your website. Protect your content and qualify for safe harbor provisions. Free, instant, and client-side.

Avatar Generator

Generate beautiful custom avatars with initials, shapes, and colors. Perfect for profiles, placeholders, and social media. Download as PNG instantly.

Calculadora de Handicap de Golfe

Calcule seu índice de handicap de golfe usando a fórmula oficial USGA / World Handicap System (WHS). Acompanhe scores, estime o handicap do campo e melhore seu jogo. 100% client-side.

Logo Maker

Design beautiful logos instantly. Enter your brand name, pick a style and color, then download your logo as SVG. Free, fast, and no sign-up required.

Screen Recorder

Record your screen directly in your browser. Free, private, no installation required. Download your recordings instantly as WebM video.

AI Prompt Generator

Generate high-quality AI image prompts for Midjourney, DALL-E, and Stable Diffusion. Choose from 20+ art styles, subjects, and settings. Free, instant, no signup required.

Kanban Board

Free online Kanban board for task management. Organize your work with To Do, In Progress, and Done columns. Auto-saves to your browser. No signup needed.

Fancy Text Generator

Convert normal text into stylish fancy fonts — bold, italic, cursive, gothic, bubble, and 20+ more styles. Perfect for social media bios, posts, and usernames.

Zalgo Text Generator

Convert normal text into creepy, glitchy Zalgo text with Unicode combining diacritics. Perfect for horror themes, memes, and creative writing. Pure client-side — your text stays private.

AI Sentence Expander

Expand and elaborate any sentence with AI-powered linguistic transformations. Choose from Formal, Academic, Creative, Concise, or Detailed modes. Free, instant, and 100% private.

Truth Table Generator

Generate truth tables for boolean logic expressions instantly. Supports AND, OR, NOT, and XOR operators. Perfect for digital logic and computer science students. Free, private, no signup.

Online Calculator

Free online calculator for basic math operations. Add, subtract, multiply, divide with keyboard support. No ads, instant results, pure client-side.

Scientific Calculator

Free online scientific calculator with advanced functions: trigonometry, logarithms, exponents, factorial, constants (π, e), memory functions, and history. Perfect for students, engineers, and scientists. 100% client-side.

Binary Calculator & Converter

Free online binary calculator with instant conversion between binary, decimal, hexadecimal, and octal. Perform bitwise AND, OR, XOR, NOT, and arithmetic operations. Perfect for programmers and students. 100% client-side.

Weighted Average Calculator

Free online weighted average calculator. Calculate weighted averages with custom weights for grades, portfolios, and data analysis. Add unlimited values and weights. Pure client-side, no ads.

Rounding Calculator

Free online rounding calculator. Round numbers to nearest integer, decimal places, or significant figures. Supports round up, round down, and standard rounding rules. Instant, private, no ads.

Matrix Calculator

Free online matrix calculator for addition, subtraction, multiplication, transpose, determinant, and inverse. Supports 2×2 and 3×3 matrices with step-by-step solutions. No ads, instant results, pure client-side.

Right Triangle Calculator

Free online right triangle calculator. Enter any two sides to instantly find the third side, area, perimeter, and all angles using the Pythagorean theorem.

Trigonometry Calculator

Free online trigonometry calculator. Calculate sine, cosine, tangent, cotangent, secant, and cosecant for any angle in degrees or radians. Instant results with reference tables.

Hypotenuse Calculator

Calculate the hypotenuse of a right triangle instantly using the Pythagorean theorem. Enter two sides and get the hypotenuse, perimeter, area, and angles. Pure client-side.

Barcode Generator

Create professional barcodes instantly in your browser. Supports CODE128, EAN-13, UPC-A, CODE39, ITF, and MSI formats. Download as PNG or SVG. 100% free and private.

Split Bill Calculator

Free online bill splitter. Split restaurant bills, rent, or shared expenses fairly with tax and tip. Calculate individual shares instantly. No signup needed.

Tip Calculator

Free online tip calculator. Calculate tip amount, total bill, and per-person cost. Split bills easily with custom tip percentages. Pure client-side, no ads.

TOTP Generator

Free online TOTP generator. Generate 2FA two-factor authentication codes from any base32 secret key. Works with Google Authenticator, Microsoft Authenticator, Authy, and any TOTP-compatible app. Pure client-side, no data leaves your browser.

HTML Formatter

Format, minify, and clean HTML instantly. Remove Word bloat, beautify with syntax highlighting. Pure client-side.

CSS Formatter

Format, minify, and beautify CSS instantly. Sort properties, fix indentation, syntax highlighting. Pure client-side.

CSS Minifier

Free online CSS minifier and compressor. Remove whitespace, comments, and redundant characters to make your CSS smaller and faster. See real-time size savings, copy output, or download as .css file. 100% client-side, no ads.

CSS Preprocessor Converter

Convert between CSS, SCSS, SASS, LESS, and Stylus instantly. Free, fast, private.

PDF to Text Converter

Extract text from PDF files instantly in your browser. Free, fast, and private — no server upload required. Supports multi-page PDFs with one-click copy and download.

Gerador de Barra de Progresso CSS

Crie barras de progresso CSS lindas com visualização ao vivo. Gere barras de progresso lineares, circulares, listradas e em gradiente com cores, tamanhos e estilos personalizáveis — tudo com código CSS pronto para copiar.

CSS Transform Generator

Create CSS transform effects visually. Combine translate, rotate, scale, and skew with live preview. Generate 2D and 3D transforms with copy-paste CSS code instantly.

CSS Skeleton Loading Generator

Generate pure CSS skeleton loading screens and shimmer effects for modern web interfaces. Choose from card, article, profile, and product presets. Customize colors, shapes, animation speed, and copy production-ready HTML + CSS instantly.

CSS Card Generator

Generate beautiful CSS card components for modern web interfaces. Choose from 8 styles including flat, gradient, glassmorphism, neumorphism, outline, border-gradient, image-overlay, and profile. Customize colors, typography, shadows, and copy production-ready CSS instantly.

Gerador de Interruptor de Alternância CSS

Gere interruptores de alternância CSS bonitos e acessíveis em segundos. Escolha entre estilos iOS, Material, Windows e personalizados. Personalize cores, tamanhos e rótulos — copie o CSS instantaneamente.

Gerador de Slider CSS

Gere belos sliders CSS compatíveis com todos os navegadores em segundos. Escolha entre estilos iOS, Material, Neumórfico, Gradiente e personalizados. Personalize cores, tamanhos, tooltips e orientação — copie o CSS instantaneamente.

Gerador de Linha do Tempo CSS

Crie linhas do tempo CSS bonitas com pré-visualização ao vivo. Gere linhas do tempo verticais e horizontais com estilos, cores, ícones e animações personalizáveis — tudo com código CSS pronto para copiar.

CSS Badge & Label Generator

Generate beautiful CSS badges and labels in seconds. Choose from 6 styles, 6 color themes, and 3 sizes. Add icons, counts, and status indicators — copy the CSS instantly.

HTML Minifier

Minify and compress your HTML code instantly. Remove comments, whitespace, and unnecessary characters for faster page loads. 100% client-side.

JSON Minifier

Minify and compress your JSON code instantly. Remove whitespace, comments, and unnecessary characters while preserving string values. 100% client-side, free, and private.

JavaScript Formatter

Format, beautify, and minify JavaScript code instantly. Syntax highlighting, proper indentation, and code compression. Pure client-side.

JS Minifier

Minify and compress your JavaScript code instantly. Remove whitespace, comments, and unnecessary characters for faster page loads. 100% client-side.

Code Playground

Live HTML/CSS/JS editor with instant preview. Write code and see results in real-time. Pure client-side, no data leaves your browser.

YouTube Thumbnail Downloader

Download YouTube video thumbnails in HD and all available qualities. Extract from any YouTube URL instantly. Pure client-side.

XML Formatter

Format, beautify, minify, and validate XML instantly. Pure client-side with syntax highlighting and tree view.

XML to JSON Converter

Convert XML documents to JSON and vice versa instantly. Supports attributes, namespaces, CDATA, and nested elements. Free, fast, and 100% client-side.

JSON to XML Converter

Convert JSON data to XML format instantly in your browser. Free, private, no server upload. Supports file upload, validation, pretty-printing, and download.

Markdown Editor

Write Markdown on the left, see live HTML preview on the right. Full syntax support — headings, lists, code blocks, tables, and more. Pure client-side.

HTML to Markdown Converter

Convert HTML code to clean Markdown format instantly in your browser. Free, private, no server upload. Supports headings, lists, tables, links, images, and code blocks.

Markdown to HTML Converter

Free online Markdown to HTML converter. Convert your Markdown files to clean HTML instantly in your browser. Supports headings, lists, links, images, code blocks, and tables.

Lorem Ipsum Generator

Generate classic Lorem Ipsum placeholder text instantly. Customize paragraphs, sentences, and words. Classic start or random. HTML or plain text. 100% client-side.

Random Paragraph Generator

Generate natural, readable English paragraphs instantly. Unlike Lorem Ipsum, this creates real sentences with nouns, verbs, and proper grammar. Perfect for realistic mockups, UI testing, and content placeholders. 100% client-side.

UUID Generator

Free online UUID generator. Generate random UUIDs (Universally Unique Identifiers) version 4 instantly. Bulk generate multiple UUIDs, copy to clipboard, or download as a file. Perfect for developers, databases, testing, and API keys. Pure client-side, no ads.

Gitignore Generator

Free online .gitignore file generator. Create perfect gitignore files for Node.js, Python, Java, Go, React, Django, and 30+ other languages and frameworks. Combine templates and add custom patterns.

.htaccess Generator

Free online .htaccess generator. Create Apache configuration files with URL rewriting, password protection, gzip compression, caching rules, hotlink protection, and more.

Speaking Time Calculator

Calculate how long it takes to speak any text aloud. Perfect for presentations, podcasts, speeches, and voiceovers. Supports multiple speaking speeds and pause adjustments. 100% private.

NanoID Generator

Free online NanoID generator. Generate short, unique, URL-friendly IDs instantly. Customize length, alphabet, and case. Bulk generate, copy to clipboard, or download. Perfect for URLs, database keys, and short identifiers. Pure client-side, no ads.

Hash Generator

Compute MD5, SHA-1, SHA-256, and SHA-512 hashes for text or files instantly. 100% client-side — your data never leaves your device. Supports multiple algorithms, uppercase/lowercase output, and per-line hashing.

JWT Decoder

Decode and inspect JWT tokens instantly in your browser. Parse header, payload, and signature with human-readable claim labels. 100% client-side — your tokens never leave your device.

MD5 Hash Generator

Generate MD5 hashes for text or files instantly. 100% client-side — your data never leaves your device. Supports uppercase/lowercase output and per-line hashing.

Text Case Converter

Free online text case converter. Instantly convert text between UPPERCASE, lowercase, Title Case, Sentence case, CamelCase, snake_case, kebab-case, and more. Perfect for writers, developers, and designers. 100% client-side — your text never leaves your browser.

Remove Accents

Instantly remove diacritical marks and accents from any text. Normalize é to e, ñ to n, ü to u, and more. Perfect for clean filenames, URLs, and standardized content.

Image Compressor

Compress JPG, PNG, and WebP images online. Reduce file size while maintaining quality. Pure client-side — your images never leave your device.

Word & Character Counter

Free online word counter and character count tool. Get instant text statistics including word count, character count, reading time, keyword density analysis, and more. Perfect for writers, students, and SEO professionals.

Citation Generator

Generate perfectly formatted citations in APA, MLA, Chicago, and Harvard styles. Supports books, journals, websites, videos & more. Instant and 100% client-side.

Duplicate Line Remover

Instantly remove duplicate lines from your text. Keep first occurrence, keep last, or remove all duplicates. Pure client-side.

URL Encoder / Decoder

Encode and decode URLs instantly. Convert special characters to percent-encoded format and back. Supports both full URL and component encoding. Pure client-side, no data sent to servers.

URL Parser

Parse and analyze any URL to extract protocol, domain, port, path, query parameters, and hash fragment. Perfect for debugging APIs, webhooks, and redirect chains.

Memorable Password Generator

Generate memorable passphrases using random word combinations. Easy to remember, hard to crack. 100% client-side — your passphrases never leave your browser.

PIN Generator

Generate secure random PIN codes instantly. Choose length (4–12 digits), quantity, and options. 100% client-side, your PINs never leave your browser.

Password Generator

Generate strong, secure passwords instantly. Customize length, character sets, and strength. 100% client-side, your passwords never leave your browser.

Password Strength Checker

Check how strong your password is with our free online password strength checker. Get instant analysis including entropy, crack time estimate, and improvement tips. 100% client-side.

Passphrase Generator

Generate secure, memorable passphrases made of random words. Easier to remember than random characters, just as secure. Customize word count, separators, and options. Pure client-side — no data sent anywhere.

Random String Generator

Generate secure, customizable random strings for passwords, tokens, and test data. 100% client-side, instant generation.

Random Word Generator

Generate random words instantly for creative writing, brainstorming, word games, and password inspiration. Filter by category, starting letter, and word length. 100% client-side.

JSON Formatter

Format, validate, minify, and repair JSON instantly. Pure client-side with syntax highlighting and tree view.

JSON Validator

Valide a sintaxe JSON instantaneamente com nosso validador JSON online gratuito. Verifique JSON malformado, chaves ausentes, vírgulas finais e tipos de dados inválidos. Obtenha mensagens de erro precisas com números de linha e coluna. 100% do lado do cliente.

JavaScript Prettifier

Prettify and format JavaScript code instantly with our free online JS prettifier. Transform minified or messy JS into clean, readable output. 100% client-side.

Validador JavaScript

Valide a sintaxe JavaScript instantaneamente com nosso validador JS online gratuito. Verifique erros, detecte problemas de sintaxe e garanta que seu código seja válido. 100% do lado do cliente.

Mind Map Generator

Create beautiful mind maps online for free with our intuitive mind map generator. Turn outlines into visual diagrams instantly. Export as PNG. No signup required. 100% client-side.

JSON Diff

Compare two JSON objects side-by-side and see exactly what changed. Highlighted additions, removals, and modifications. 100% client-side.

CSV to JSON Converter

Convert CSV data to JSON format instantly. Free, private, works entirely in your browser. No upload to servers.

Text to Columns Converter

Free online text to columns converter. Split text by delimiter into tables, CSV, Markdown, HTML, or JSON. Auto-detect separators, header rows, and more. 100% client-side.

Keyword Extractor

Free online keyword extractor. Paste your text to instantly extract top keywords, analyze word frequency, and visualize keyword density. Perfect for SEO, content writing, and research. 100% client-side.

CSV to SQL Converter

Convert CSV data to SQL INSERT statements instantly in your browser. Supports MySQL, PostgreSQL, SQLite, SQL Server, Oracle. Free, private, no server upload.

CSV to JSON Converter

Convert CSV data to JSON format instantly. Free, private, works entirely in your browser. No upload to servers.

CSV to Excel Converter

Convert CSV data to Excel (.xlsx) format instantly in your browser. Free, private, no server upload. Supports custom delimiters and automatic data type detection.

Excel to CSV Converter

Convert Excel (.xlsx, .xls) files to CSV format instantly in your browser. Free, private, no server upload. Supports sheet selection and custom delimiters.

JSON to CSV Converter

Convert JSON data to CSV format instantly in your browser. Free, private, no server upload. Supports nested object flattening and custom delimiters.

JSON to TypeScript

Convert JSON objects into TypeScript interfaces instantly. Pure client-side with smart type inference and nested object support.

Number Base Converter

Convert between Binary (2), Octal (8), Decimal (10), and Hexadecimal (16) instantly. Free, private, no server upload.

Date Duration Calculator

Calculate the exact number of days, months, and years between two dates. Includes workday count, date addition/subtraction, and countdown. Pure client-side.

Day of Week Calculator

Enter any date to instantly find out what day of the week it was — past, present, or future. Includes weekend check, day of year, week number, and zodiac sign.

Working Days Calculator

Calculate business days between two dates, excluding weekends and holidays. Also add or subtract working days from any date. Pure client-side.

Time Duration Calculator

Calculate the exact hours, minutes, and seconds between two times. Supports same-day, overnight, and multi-day calculations. Pure client-side.

Time From Now Calculator

Calculate what time it will be after any number of minutes, hours, days, or weeks. Supports past and future time calculations. Pure client-side.

Stair Calculator

Calculate stair dimensions instantly: step count, riser height, tread depth, stringer length, and stair angle. Supports imperial and metric units. Perfect for builders and DIY projects.

Online Stopwatch

Free online stopwatch with lap times, pause/resume, and reset. Track split times, record multiple laps, and export results. Simple, accurate, and easy to use.

Tiny Date Generator

Create trendy superscript and subscript dates (e.g., 🏝️ ²⁰²⁵/₁₀.₁₈ᵕ̈) for your social media bios and tweets.

Random Number Generator

Generate unique random numbers in bulk. Set range, count, and sort order. 100% free online tool.

List Randomizer

Shuffle any list randomly or pick a random subset. Supports line, comma, or space-separated items. Pure client-side.

Regex Tester & Validator

Test and validate regular expressions in real-time. Match highlighting, capture groups, replace preview, and common presets. Pure client-side.

Regex Visualizer

Visualize and understand any regular expression. See the structure, explanation of each token, and interactive examples. Pure client-side.

Resume Builder

Build a professional resume in minutes. Fill in your details, choose a template, and download a print-ready PDF. No signup required, 100% private.

Cover Letter Generator

Generate professional, personalized cover letters tailored to any job. Enter job details, your experience, and choose a tone — get a ready-to-use cover letter in seconds. Copy or download as text.

Fibonacci Calculator

Calculate any Fibonacci number instantly. Get the nth term, full sequence, golden ratio approximation, and sequence sum. Supports large numbers with BigInt. Free and 100% client-side.

Gradient Generator

Create stunning CSS gradients with an intuitive visual editor. Supports linear, radial, and conic gradients with customizable color stops, angles, and positions. Pure client-side — instant preview and copy-ready CSS.

CSS Text Gradient Generator

Generate beautiful CSS gradient text effects for modern web design. Create linear, radial, and conic gradients with live preview. Customize colors, angles, and copy production-ready CSS instantly.

Color Palette Generator

Generate beautiful color palettes from a single base color using color theory. Supports complementary, triadic, analogous, monochromatic, split-complementary, and tetradic schemes. Pure client-side — instant results.

Image Color Palette Extractor

Upload any image and instantly extract its dominant colors. Perfect for designers, artists, and developers who need color inspiration from photos, screenshots, or artwork. Pure client-side — your images never leave your browser.

Color Wheel Generator

Create and explore colors with an interactive HSL color wheel. Pick any hue, adjust saturation and lightness, and get instant HEX, RGB, and HSL values. Perfect for designers, artists, and developers. Pure client-side — instant results.

Color Contrast Checker

Test color combinations for WCAG 2.1 AA/AAA accessibility compliance. Calculate contrast ratios instantly. Perfect for designers and developers ensuring text readability. Pure client-side.

Color Shades & Tints Generator

Generate tints, shades, and tones from any base color. Perfect for creating color scales, design systems, and gradients. Pure client-side — instant results.

Color Palette Generator

Generate harmonious color palettes using color theory rules. Choose from monochromatic, analogous, complementary, triadic, and more. Perfect for designers, developers, and brand creators. Pure client-side — instant results.

Web Safe Color Picker

Browse all 216 web-safe colors used in early web design. Click any color to copy its hex code instantly. Perfect for retro-style web projects and cross-browser compatibility.

RGB Color Picker

Pick RGB colors with sliders, preview in real-time, and copy values to clipboard. Simple and fast.

Discord Fonts

Generate fancy text fonts for Discord, Twitter, and Bio. Bold, Italic, Gothic, and more.

Instagram Fonts

Generate fancy text fonts for Instagram, Twitter, and Bio. Bold, Italic, Gothic, and more.

Text Diff Viewer

Compare two text blocks or code snippets to find differences. Privacy-first online diff tool with side-by-side comparison. 100% client-side, no data sent to servers.

List Compare

Compare two lists to find unique items, common items, and combined results. Pure client-side.

Line Ending Converter

Convert text line endings between LF (Unix/macOS) and CRLF (Windows). Detect mixed endings and normalize automatically. Pure client-side.

Base64 to Image Converter

Convert Base64-encoded image strings to viewable images instantly. Supports PNG, JPEG, GIF, WebP, BMP, and SVG. Pure client-side decoding — no server uploads, 100% private and secure.

Image to Base64 Converter

Convert any image (PNG, JPG, GIF, WebP, SVG, BMP) to Base64 Data URI or raw Base64 string instantly. 100% client-side processing — no server uploads, completely private and secure. Perfect for embedding images in HTML, CSS, JSON, and emails.

File to Base64 Converter

Convert any file (PDF, images, documents, audio, video, archives) to Base64 encoded string or Data URI instantly. Supports standard Base64, URL-safe Base64, and Data URI output formats. 100% client-side processing — no server uploads, completely private and secure. Perfect for API payloads, email attachments, data embedding, and secure file transfer.

Base64 Text Encoder / Decoder

Encode plain text to Base64 and decode Base64 back to text instantly. Supports URL-safe Base64 and full UTF-8. Pure client-side.

Conversor HEX para ASCII

Conversor HEX para ASCII gratuito online. Converta valores hexadecimais em texto legível instantaneamente e vice-versa. Apenas no lado do cliente, nenhum dado enviado aos servidores.

Text to Octal Converter

Free online text to octal converter. Instantly convert text to octal numbers and octal back to readable text. Pure client-side, no data sent to servers.

Text to Hex Converter

Free online text to hex converter. Instantly convert text to hexadecimal numbers and hex back to readable text. Pure client-side, no data sent to servers.

Roman Numeral Converter

Convert between Roman numerals and Arabic numbers instantly. Translate any integer (1–3999) to Roman numerals and vice versa. Free, fast, and 100% client-side.

Base58 Encoder / Decoder

Encode text to Base58 and decode Base58 back to text instantly. Supports the Bitcoin alphabet (no 0, O, I, l). Pure client-side, no server upload.

Data URI Generator

Convert text, images, CSS, JavaScript, and other files to Base64 or URL-encoded Data URIs instantly. Pure client-side — no uploads to any server.

Tile Calculator

Calculate how many tiles you need for your floor, wall, or backsplash. Estimates total tiles, area, and cost with waste factor included.

Wavelength to Color Converter

Convert light wavelength in nanometers to its corresponding RGB color. Explore the visible light spectrum from violet to red with instant color preview and hex codes. Pure client-side.

Text to Binary / Binary to Text

Convert plain text to binary (ASCII) representation and decode binary back to text. Also supports hexadecimal. Pure client-side, instant conversion.

QR Code Generator

Generate QR codes instantly for URLs, text, WiFi, email, and phone numbers. Customize colors and size. Download as PNG. 100% client-side.

QR Code Decoder

Upload or paste a QR code image to instantly decode its content. Supports URLs, WiFi, email, phone numbers, and plain text. 100% client-side — your images never leave your device.

WhatsApp Link Generator

Generate WhatsApp click-to-chat links instantly. Create wa.me links with custom messages for business, support, and personal use. No app required — 100% free and client-side.

Screen Size Comparator

Visually compare screen sizes of phones, tablets, monitors, and TVs. See real physical dimensions side by side with accurate aspect ratio scaling.

JSON Path Finder

Query and extract data from JSON using JSONPath expressions. Pure client-side with syntax highlighting and result preview.

Favicon Generator

Generate website favicons in all standard sizes from any image. Upload, preview, and download PNG icons from 16×16 to 512×512. Pure client-side.

Image Compressor

Compress JPG, PNG, and WebP images online. Reduce file size while maintaining quality. Pure client-side — your images never leave your device.

Image Resizer

Resize images online to any dimensions. Maintain aspect ratio, choose output format (PNG/JPG/WEBP), and download instantly. 100% client-side — no upload to servers.

Image Pixelator

Pixelate images online instantly. Upload a photo, adjust the pixel block size, preview in real time, and download your pixel art. 100% client-side — no upload to servers.

Image Cropper

Crop images online with visual selection. Choose from preset ratios (1:1, 16:9, 4:3) or freeform cropping. Download instantly. 100% client-side — no upload to servers.

Image Watermarker

Add customizable text watermarks to your images online. Adjust position, size, color, opacity, and font. Supports PNG, JPG, and WebP. 100% client-side — your images never leave your device.

Image Filter

Apply stunning photo filters online for free. Adjust grayscale, sepia, blur, brightness, contrast, saturation, and hue rotation. Download your edited image instantly. 100% client-side — no upload to servers.

Aspect Ratio Calculator

Calculate aspect ratios instantly. Enter width and height to get the simplified ratio, decimal value, and common format names. Perfect for images, video, and responsive design. 100% client-side.

Print Size Calculator

Free online print size calculator. Convert pixels to inches, centimeters, and millimeters based on DPI. Or calculate required pixels for a given print size. Perfect for designers, photographers, and print professionals.

Battery Life Calculator

Free online battery life calculator. Estimate how long your device battery will last based on capacity, voltage, and power consumption. Supports phones, laptops, tablets, and custom devices.

Typing Speed Test

Test your typing speed with our free online WPM typing test. Get instant results with words per minute, accuracy percentage, and error analysis. No account required — 100% client-side.

Click Speed Test

Test your clicking speed with our free CPS (Clicks Per Second) tester. Challenge yourself in 5/10/30/60 second modes. Track your score and share with friends.

Mouse Test

Test all mouse buttons, scroll wheel, movement tracking, and click speed in real-time. Works with any mouse including gaming mice with extra buttons.

Webcam Test

Test your webcam online in seconds. Check if your camera is working, view the live video feed, take snapshots, and see device info — all in your browser with zero data upload.

Microphone Test

Test your microphone online in seconds. Check if your mic is working, visualize audio waveforms in real-time, monitor volume levels, and record audio — all in your browser with zero data upload.

Speaker Test

Test your speakers and audio setup online in seconds. Play test tones, check left/right channels, and verify your sound system is working — all in your browser with zero data upload.

Reaction Time Test

Measure your reaction speed in milliseconds with our free online reaction time test. Challenge yourself, track your scores, and see how you compare. Pure client-side, no data sent to servers.

Age Calculator

Calculate your exact age from birth date to today or any date. Results in years, months, days, weeks, and total days. Pure client-side.

Electricity Cost Calculator

Estimate your monthly and annual electricity costs by adding appliances, setting usage hours, and entering your local energy rate. Free, instant, and completely private — all calculations happen in your browser.

EV Charging Cost Calculator

Calculate how much it costs to charge your electric vehicle at home, public stations, or work. Enter your battery size, electricity rate, and desired charge level to get instant cost estimates. Free, private, and completely client-side.

Percentage Calculator

Free online percentage calculator. Calculate percentages, percentage increase, decrease, difference, and reverse percentages instantly. Pure client-side, no ads.

Conversion Rate Calculator

Free online conversion rate calculator. Calculate conversion rates, required visitors, and target conversions for e-commerce, SaaS, and marketing campaigns. Pure client-side, no ads.

ROAS Calculator

Free online ROAS calculator. Calculate Return on Ad Spend, break-even ROAS, and evaluate your advertising campaign performance. Pure client-side, no ads.

Percentage Change Calculator

Free online percentage change calculator. Calculate percent increase, percent decrease, percentage difference, and reverse values. Instant results, pure client-side.

Percentage Error Calculator

Free online percentage error calculator. Calculate percent error, absolute error, and relative error instantly. Compare experimental and theoretical values with step-by-step results. Pure client-side, no ads.

BMI Calculator

Calculate your Body Mass Index (BMI) with multiple classification standards. Get health recommendations and ideal weight range. Pure client-side.

BSA Calculator

Calculate Body Surface Area (BSA) using 5 standard medical formulas: Du Bois, Mosteller, Haycock, Gehan & George, and Boyd. Used for drug dosing, chemotherapy, and medical assessments.

Ideal Weight Calculator

Calculate your ideal body weight using scientifically validated formulas: Robinson, Miller, Devine, and Hamwi. Supports both Metric and Imperial units. Pure client-side.

BMR & TDEE Calculator

Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) with multiple formulas. Get personalized calorie recommendations for weight loss, maintenance, or muscle gain. Pure client-side.

TDEE Calculator

Calculate your Total Daily Energy Expenditure (TDEE), Basal Metabolic Rate (BMR), and BMI using the scientifically validated Mifflin-St Jeor equation. Get personalized calorie targets for weight loss, maintenance, and muscle gain. Pure client-side.

Macro Calculator

Calculate your personalized macronutrient targets (protein, carbohydrates, fat) based on your body stats, activity level, and fitness goals. Supports multiple diet plans: Standard, Low Carb, High Protein, Keto, and Custom.

Recipe Scaler

Free online recipe scaler and converter. Scale any recipe ingredients proportionally for different serving sizes. Supports fraction inputs, unit conversions, and bulk ingredient parsing. Pure client-side.

Water Intake Calculator

Calculate your personalized daily water intake based on weight, activity level, and climate. Get hourly hydration schedule and tips. Pure client-side.

Body Fat Calculator

Calculate your body fat percentage using the U.S. Navy method or BMI-based formula. Supports both metric and imperial units.

Heart Rate Zones Calculator

Calculate your personal heart rate training zones for optimal running, cycling, and fitness training. Supports multiple formulas including Fox, Tanaka, Gellish, and Karvonen.

Running Pace Calculator

Calculate your running pace per km or mile, estimated finish time, and split times for any distance including 5K, 10K, half marathon, and marathon. Pure client-side.

Swim Pace Calculator

Calculate your swimming pace per 100m or 100 yards, speed in km/h and mph, and lap splits for any pool distance and time.

Walking Pace Calculator

Calculate your walking pace per km or mile, estimated finish time, and split times for any distance. Supports leisure, brisk, and power walking paces. Pure client-side.

Sleep Calculator

Calculate the best time to wake up or go to bed based on 90-minute sleep cycles. Wake up feeling refreshed, not groggy. Pure client-side.

Calories Burned Calculator

Calculate how many calories you burn during exercise based on MET values. Supports 50+ activities including running, swimming, cycling, and more. Pure client-side.

Calorie Deficit Calculator

Calculate your optimal daily calorie deficit for safe and effective weight loss. Get personalized calorie targets, projected weight loss timelines, and weekly forecasts based on your TDEE and goals. Pure client-side.

Weight Converter

Convert between all weight and mass units instantly: kilograms, pounds, ounces, grams, milligrams, metric tons, stones, grains, carats, and more. Real-time conversion with formulas and reference table.

Length Converter

Convert between all length units instantly: meters, feet, inches, centimeters, millimeters, kilometers, miles, yards, and more. Real-time conversion with formulas and reference table.

Unit Converter

Convert units instantly across 5 categories — length, weight, temperature, speed, and volume. Metric ↔ Imperial made simple. Pure client-side.

Pressure Converter

Convert between all pressure units instantly: pascals, kilopascals, megapascals, bars, millibars, atmospheres, psi, torr, mmHg, inHg, inches of water, and feet of water. Real-time conversion with formulas and reference table.

Energy Converter

Convert energy units instantly — Joules, Kilojoules, Calories, Kilocalories, Watt-hours, Kilowatt-hours, BTU, Electron Volts, and more. Metric & Imperial. 100% client-side.

Tip Calculator

Free online tip calculator. Calculate tip amount, total bill, and per-person cost. Split bills easily with custom tip percentages. Pure client-side, no ads.

Mortgage Calculator

Calculate your total monthly mortgage payment including principal, interest, property taxes, homeowners insurance, PMI, and HOA fees. Complete PITI breakdown with amortization schedule.

Rent vs Buy Calculator

Compare the total cost of renting vs buying a home over time. Calculate your break-even point and make an informed decision on whether to rent or buy.

Loan Calculator

Calculate your monthly loan payments, total interest, and full amortization schedule. Free mortgage calculator with equal installment and equal principal repayment options.

Debt-to-Income Ratio Calculator

Calculate your debt-to-income (DTI) ratio instantly. Enter monthly income and debts to see your DTI percentage and loan qualification status. Free, private, no registration.

Credit Card Payoff Calculator

Calculate how long it will take to pay off your credit card debt. See total interest, compare payment strategies, and find the best repayment plan. All calculations happen in your browser — your financial data never leaves your device.

Car Loan Calculator

Calculate your monthly car payment, total interest, and total cost. Includes down payment, trade-in, sales tax, and fees. Compare loan terms instantly. 100% free and private.

Auto Loan Calculator

Calculate your auto loan monthly payments, total interest, and total cost with our free car loan calculator. Includes amortization schedule, extra payment analysis, and accelerated payoff comparison.

Lease Calculator

Calculate car lease payments, equipment lease costs, and property lease expenses. Compare lease vs buy with total cost breakdown.

EMI Calculator

Free online EMI calculator. Calculate Equated Monthly Installment for home loan, car loan, personal loan, education loan. View amortization schedule, total interest breakdown, and downloadable CSV. Pure client-side — your data never leaves your device.

IRR Calculator

Calculate the Internal Rate of Return (IRR) for any investment project with custom cash flows. See NPV, payback period, profitability index, benchmark comparisons, and cash flow visualization. Pure client-side, instant results.

CAGR Calculator

Calculate the Compound Annual Growth Rate (CAGR) for any investment or business metric. See total return, growth multiple, future projections, and benchmark comparisons. Pure client-side, instant results.

WACC Calculator

Calculate the Weighted Average Cost of Capital (WACC) for any company using equity, debt, cost of equity, and cost of debt. Includes CAPM method, capital structure visualization, and industry benchmarks. Pure client-side, instant results.

Compound Interest Calculator

Free compound interest calculator. Calculate how much your investment will grow with compound interest. Compare with simple interest, view year-by-year breakdown, and discover the power of compounding.

APY Calculator

Calculate Annual Percentage Yield (APY) from nominal APR and compounding frequency. Compare yields across different compounding periods and convert APY back to APR. Pure client-side, instant results.

Stock Average Calculator

Free online stock average calculator. Enter multiple buy prices and share quantities to instantly calculate your average cost per share, total investment, and breakeven price. Perfect for dollar-cost averaging and average-down strategies. 100% client-side.

Quadratic Equation Solver

Solve quadratic equations ax² + bx + c = 0 instantly. Get real and complex roots, discriminant, vertex, and step-by-step solution. Free and 100% client-side.

Simple Interest Calculator

Calculate simple interest and total amount with any principal, rate, and time period. Supports yearly, monthly, and daily time units. Pure client-side, instant results.

Dividend Calculator

Calculate dividend yield, annual dividend income, and projected growth. Plan your passive income strategy with our free dividend calculator. Pure client-side, instant results.

Budget Calculator

Plan your monthly budget with our free online calculator. Track expenses by category, visualize spending with charts, and calculate your savings rate instantly.

Salary Calculator

Convert between annual salary, monthly salary, weekly wage, daily wage, and hourly rate. Estimate take-home pay after taxes for US, China, UK, and EU. Pure client-side.

Paycheck Calculator

Calculate your take-home pay after taxes and deductions. Enter your gross salary, filing status, and deductions to see your net income per paycheck.

Net Worth Calculator

Calculate your net worth by adding up all your assets and subtracting your liabilities. Track your financial health and plan for the future.

Inflation Calculator

Calculate how inflation affects your purchasing power over time. See future equivalent amounts, real value loss, and year-by-year breakdown. Pure client-side, instant results.

Discount Calculator

Free online discount calculator. Calculate sale price, percentage off, and amount saved instantly. Enter original price and discount percentage to see final price and total savings. 100% client-side, no ads, works with any currency.

Calculadora de Impostos

Calculadora de impostos gratuita online. Calcule o valor do imposto e o preço total a partir do preço sem impostos e da taxa. Inclui taxas predefinidas para estados dos EUA, Canadá e países da UE.

Income Tax Calculator

Calculate income tax and net take-home pay instantly. Enter your annual income and tax rate to see your tax amount, after-tax income, and effective tax rate. Free, fast, and 100% client-side.

VAT Calculator

Calculate VAT amount, add VAT to a price, or remove VAT from a total. Supports all standard VAT rates. Pure client-side, instant results.

Profit Margin Calculator

Calculate profit margin, markup percentage, and selling price instantly. Enter cost and price to see profit metrics. Free, private, no registration.

Gross Margin Calculator

Calculate gross margin, gross profit, and markup percentage instantly. Enter cost and revenue to see your profitability metrics. Free, private, no registration.

Calculadora de Impostos

Calculadora de impostos gratuita online. Calcule o valor do imposto e o preço total a partir do preço sem impostos e da taxa. Inclui taxas predefinidas para estados dos EUA, Canadá e países da UE.

ROI Calculator

Calculate your return on investment (ROI) instantly. Enter initial investment and final value to see ROI percentage, total gain or loss, and annualized return. Pure client-side, zero latency.

LTV Calculator

Free online LTV (Customer Lifetime Value) calculator. Calculate customer lifetime value from ARPU, churn rate, and gross margin. Plan SaaS growth and optimize CAC. Pure client-side.

Churn Rate Calculator

Free online churn rate calculator. Calculate customer churn rate, revenue churn, and annual churn. Compare against SaaS industry benchmarks. Pure client-side.

MRR Calculator

Free online MRR calculator. Calculate your Monthly Recurring Revenue from customer subscriptions. Plan growth, forecast revenue, and benchmark your SaaS metrics. Pure client-side.

Conversion Rate Calculator

Free online conversion rate calculator. Calculate conversion rates, required visitors, and target conversions for e-commerce, SaaS, and marketing campaigns. Pure client-side, no ads.

LTV Calculator

Free online LTV (Customer Lifetime Value) calculator. Calculate customer lifetime value from ARPU, churn rate, and gross margin. Plan SaaS growth and optimize CAC. Pure client-side.

Car Payment Calculator

Estimate your car loan monthly payment, total interest, and full ownership cost instantly. Enter vehicle price, down payment, trade-in value, interest rate, and loan term. Free, private, no registration.

Amortization Schedule Calculator

Generate a complete loan amortization schedule instantly. Calculate monthly payments, total interest, and see a year-by-year breakdown of principal and interest. Pure client-side, zero latency.

Color Converter

Convert colors between RGB, Hex, HSL, and CMYK formats instantly. Auto-detect any color format you paste, see live preview, and save conversion history. Pure client-side — no data sent anywhere.

JWT Decoder

Decode and inspect JWT tokens instantly in your browser. Parse header, payload, and signature with human-readable claim labels. 100% client-side — your tokens never leave your device.

JWT Encoder

Generate and sign JWT tokens in your browser using HMAC-SHA256/384/512. Enter your payload and secret to instantly create signed tokens — zero server interaction.

World Time & Timezone Converter

Convert time across 350+ time zones instantly. Check world clock for major cities. Plan meetings across time zones. Pure client-side.

Currency Converter

Free online currency converter with real-time exchange rates for 30+ currencies. Convert USD, EUR, GBP, CNY, JPY and more instantly. Pure client-side with offline fallback.

Credit Card Validator

Validate credit card numbers instantly using the Luhn algorithm. Detects card type (Visa, Mastercard, Amex, etc.) and checks formatting. 100% client-side, no data leaves your browser.

Credit Card Generator

Generate valid test credit card numbers for development and testing. All numbers pass the Luhn algorithm check and follow real card formats. 100% client-side, no data leaves your browser.

Morse Code Translator

Convert text to Morse code and Morse code to text instantly. Includes audio playback, copy functionality, and sample texts. 100% client-side.

What Is My IP Address

Find your public IPv4/IPv6 address instantly. View location, ISP, timezone, and network details. 100% client-side, your data never leaves your browser.

DNS Lookup

Query DNS records for any domain using Cloudflare DNS-over-HTTPS. Check A, AAAA, MX, NS, TXT, CNAME, SOA, and CAA records instantly. 100% client-side — no data sent to our servers.

Subnet Calculator

Calculate IP subnet details instantly. Enter an IP address and CIDR prefix to get network address, broadcast, usable host range, subnet mask, and more. Pure client-side.

What Is My User Agent

Check your browser user agent, operating system, screen resolution, and device details instantly. Free online tool with no signup.

Browser & System Information

Comprehensive browser and system information detector. View your browser name, version, OS, screen resolution, device capabilities, supported Web APIs, network info, and hardware details. Pure client-side, no data sent to servers.

Daily Quote Generator

Discover inspiring quotes from famous thinkers, leaders, and creators. Generate random motivational quotes daily, copy them, or share on social media. Pure client-side, no data collection.

Color Name Finder

Enter any hex, RGB, or HSL color value and instantly find the closest named color match. See color names, hex values, RGB, HSL, and similar colors.

HTML Entity Encoder / Decoder

Convert text to HTML entities and decode HTML entities back to text instantly. Supports named entities (<) and numeric entities (<). Pure client-side.

Meta Description Generator

Generate SEO-optimized meta descriptions for any web page. Improve click-through rates from Google search results with compelling, keyword-rich descriptions. Pure client-side, instant generation.

Meta Tag Generator

Generate SEO-friendly meta tags, Open Graph tags, and Twitter Card tags for any website. Live preview with character counters. Pure client-side, instant generation.

Web App Manifest Generator

Generate a complete web app manifest.json for your Progressive Web App (PWA). Configure icons, theme colors, display mode, and more. Instant client-side generation with download.

SERP Preview

Visualize how your page will appear in Google search results. Check title and description length with live desktop and mobile previews. Pure client-side, instant preview.

Text Sorter

Sort lines of text alphabetically, by length, in reverse, or randomly shuffle. Remove duplicates and empty lines. Pure client-side, instant.

HTML Table Generator

Generate clean HTML table code from CSV or TSV data. Customizable borders, headers, zebra striping, and alignment. Pure client-side, copy-ready HTML output.

Online Notepad

A clean, distraction-free online notepad with auto-save to your browser. Write notes, count words and characters, download as .txt. No account required — 100% private.

GPA Calculator

Free online GPA calculator supporting 4.0 scale with weighted/unweighted options. Add unlimited courses, calculate your grade point average instantly. Pure client-side, no data sent anywhere.

CGPA Calculator

Free online CGPA calculator. Calculate your Cumulative Grade Point Average from course grades and credits. Supports 4.0, 5.0, and 10.0 grading scales.

Grade Calculator

Free online grade calculator. Calculate your weighted course grade from assignments, or find out what score you need on your final exam to reach your target grade.

Final Grade Calculator

Calculate exactly what score you need on your final exam to reach your target grade. Enter your current grade, final exam weight, and desired score — get instant results. Free, private, no signup.

Grammar & Spell Checker

Check grammar, spelling, and style in your text instantly. Identifies errors, suggests corrections, and explains rules — all in your browser with zero data sent to servers.

BPM Calculator / Tap Tempo

Tap along to any song to find its BPM instantly. Free online tap tempo tool for musicians, DJs, producers, and dancers. Pure client-side, no download needed.

Online Metronome

Free online metronome with precise beat timing. Adjustable BPM (40-280), multiple time signatures, accent control, and visual beat indicator. Pure client-side, no download needed.

Online Drawing Pad

A free online drawing pad with customizable brush colors and sizes. Sketch, doodle, and draw instantly in your browser. No signup, no ads. Export your drawings as PNG.

Text Reverser

Reverse text online instantly. Flip characters, reverse word order, or mirror entire sentences. Free, fast, and 100% client-side.

Superscript & Subscript Generator

Convert any text to superscript (¹²³) or subscript (₁₂₃) instantly. Perfect for math, chemistry, social media, and academic writing. Free, fast, and 100% client-side.

Find and Replace Text

Search and replace text online instantly. Supports case-sensitive matching, regex mode, replace all or first occurrence. Free, fast, and 100% client-side.

Sitemap Generator

Generate standard XML sitemaps instantly. Paste your URLs, set priority and change frequency, then download or copy your sitemap.xml. 100% client-side, free, no registration.

Robots.txt Generator

Generate properly formatted robots.txt files to control how search engines crawl your website. Select bots, set allow/disallow rules, add sitemap, and download instantly. Pure client-side, privacy-safe.

Random Color Generator

Generate beautiful random colors with one click. Create color harmonies, palettes, and copy HEX, RGB, or HSL values instantly. Pure client-side, no limits.

Fake Data Generator

Generate realistic fake data for testing and development. Create mock names, emails, addresses, phone numbers, companies, and more. Export as JSON, CSV, or SQL. 100% client-side.

Invoice Generator

Create professional invoices instantly. Customize company & client info, add line items, calculate tax, and print or save as PDF. No signup required.

Receipt Generator

Generate professional receipts instantly in your browser. Fill in business details, add line items, apply tax, and print or download as PDF. No signup required.

Text to Slug

Convert any text into clean, URL-friendly slugs in real time. Multiple formats, custom separators. Pure client-side.

Roman Numeral Converter

Convert numbers to Roman numerals and vice versa. Supports 1–3999 with validation and history.

Character Counter

Count characters, words, sentences, paragraphs, lines, bytes and more. Real-time stats with social media limits.

Online Countdown Timer & Focus Timer

Create a free online countdown timer for any event or use it as a focus timer for productive work sessions. Track days, hours, minutes, and seconds in real-time with beautiful visuals.

Screen Resolution Detector

Instantly check your screen resolution, viewport size, pixel density, browser details, and device information. 100% free, private, and client-side.

Image Format Converter

Convert images between PNG, JPG, and WebP formats online for free. Adjust quality for lossy formats, preview results, and download instantly. 100% client-side — your images never leave your device.

SVG to PNG Converter

Convert SVG vector files to PNG raster images online for free. Set custom dimensions, background color, and scale. 100% client-side — your files never leave your device.

Data Size Converter

Convert data sizes instantly between bytes, kilobytes, megabytes, gigabytes, terabytes, and petabytes. Supports binary (1024) and decimal (1000) standards. Pure client-side.

File Size Converter

Convert file sizes instantly between bytes, kilobytes, megabytes, gigabytes, terabytes, and petabytes. Decimal (1000) and binary (1024) prefixes supported. Pure client-side.

Readability Analyzer

Free online readability analyzer. Calculate Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog Index, Coleman-Liau, SMOG, ARI and more. Get instant text readability scores and reading level estimates.

Reading Speed Test

Free online reading speed test. Measure your words per minute (WPM), comprehension, and reading level instantly. No registration required.

Reading Time Calculator

Estimate reading time for articles, essays, books, and any text. Supports slow, average, and fast reading speeds. Instant results, 100% private.

Coin Flipper

Flip a virtual coin online. Heads or Tails? Make fair random decisions with our free coin toss tool. Track statistics, flip multiple times, and enjoy smooth animations. 100% client-side.

Dice Roller

Roll virtual dice online for free. Supports D4, D6, D8, D10, D12, D20, and D100. Roll multiple dice at once, see the total sum, and track your roll history. Perfect for board games, D&D, and RPGs.

Wheel Spinner

Spin a colorful wheel to make random decisions. Add your own options, customize colors, and let the wheel pick for you. Great for games, giveaways, classroom activities, and decision-making.

Random Team Generator

Shuffle and divide any list of names into random teams or groups instantly. Perfect for classrooms, sports, office activities, and party games. 100% client-side, no data sent to servers.

Random Country Generator

Generate random countries instantly. Explore flags, capitals, populations, currencies, and more. Perfect for travel inspiration, education, and games.

Random Name Generator

Generate random names instantly. Choose from male, female, or unisex names across 12+ cultures. Perfect for characters, babies, test data, and creative writing.

SQL Formatter

Format and beautify SQL queries instantly. Supports Standard SQL, MySQL, PostgreSQL, and SQLite. Configurable indentation, keyword casing, and line width. Pure client-side.

Text to Speech

Convert text to natural-sounding speech instantly in your browser. Choose from multiple voices, adjust speed, pitch, and volume. Pure client-side — your text never leaves your device.

Speech to Text

Convert your voice to text in real-time using your browser's built-in speech recognition. Supports 20+ languages. No upload needed — all processing happens locally on your device.

Statistics Calculator

Free online statistics calculator. Calculate mean, median, mode, standard deviation, variance, quartiles, range, and detect outliers instantly. Step-by-step breakdown. Pure client-side.

Pie Chart Generator

Free online pie chart generator. Create stunning pie charts, doughnut charts, and polar area charts with custom colors, labels, and data. Export as PNG. No signup needed, pure client-side.

Bar Chart Generator

Free online bar chart generator. Create beautiful vertical bar charts, horizontal bar charts, stacked bar charts, and grouped bar charts with custom colors, labels, and axes. Export as PNG. No signup needed, pure client-side.

Line Chart Generator

Free online line chart generator. Create beautiful line charts, area charts, spline charts, and stepped charts with multi-series support, custom colors, and axis labels. Export as PNG. No signup needed, pure client-side.

Flip Text Generator

Transform your text upside down, reverse it, or create mirror text. Perfect for social media bios, fun messages, and creative designs. Pure client-side.

Meme Generator

Create hilarious memes in seconds. Upload any image, add top and bottom text, customize font size and color, then download and share. Pure client-side — your images never leave your device.

Cipher / Encryption Decoder

Decode and encode text using classic ciphers: Caesar cipher (1-25 shift), ROT13, Atbash, reverse text, and Base64. Pure client-side, no data leaves your browser.

Email Signature Generator

Create professional HTML email signatures instantly. Choose from 4 templates, customize colors, add social links, and copy or export your signature. Pure client-side, no data leaves your browser.

One Rep Max Calculator

Calculate your one rep max with Epley, Brzycki, Lombardi, Mayhew and O'Conner formulas. Includes plate loading calculator and percentage tables.

YAML Formatter

Format, validate, minify, and convert YAML to JSON instantly. Pure client-side with structure analysis.

YAML Validator

Validate your YAML documents instantly with our free online YAML validator. Check syntax, detect errors with line numbers, and ensure well-formed YAML. 100% client-side, no data sent to servers.

YAML Beautifier

Beautify and prettify your YAML documents instantly with our free online YAML beautifier. Clean indentation, readable structure, and syntax highlighting. 100% client-side, no data sent to servers.

YAML Minifier

Minify and compress your YAML documents instantly with our free online YAML minifier. Remove whitespace, comments, and unnecessary characters for smaller file sizes. 100% client-side, no data sent to servers.

AI Language Detector

Detect the language of any text instantly with AI-powered statistical analysis. Supports 100+ languages with confidence scores. No signup required, 100% private, works offline in your browser.

AI Content Detector & Analyzer

Free AI content detector and analyzer. Analyze text to estimate AI-generation probability using statistical linguistic features. Pure client-side — your text never leaves your device.

AI Token Counter

Estimate token count for ChatGPT, Claude, Gemini, and other LLMs. Plan your prompts and stay within context limits. 100% client-side.

AI Text Paraphraser

Rewrite and rephrase text in multiple styles: Formal, Concise, Creative, Academic, or Casual. No API key needed — 100% client-side processing.

AI Grammar Checker

Check grammar, spelling, and writing style instantly with AI-powered suggestions. Identifies errors, explains rules, and shows corrections — all in your browser with zero data sent to servers.

AI Email Writer

Generate professional, friendly, formal, or persuasive emails instantly. Enter a topic, recipient, and tone — get a polished email in seconds. 100% free, no signup, client-side only.

AI Article Outline Generator

Generate structured article outlines instantly. Enter a topic, choose your article type and tone — get a complete outline with headings, sections, and key points. 100% free, no signup, client-side only.

Table of Contents Generator

Generate structured table of contents from headings or plain text. Supports Markdown, HTML, and plain text output. Auto-detect headings, customize numbering styles, and export instantly. 100% free, no signup, client-side only.

AI Video Script Generator

Free AI video script generator. Create engaging YouTube, TikTok, Instagram, and LinkedIn video scripts instantly. Choose platform, duration, and tone. Get hook, body, and CTA — 100% free, no signup, client-side only.

AI Content Repurposer

Transform a single piece of content into multiple formats instantly. Repurpose blog posts into Twitter threads, LinkedIn posts, Instagram captions, video scripts, newsletters, and more. 100% free, no signup, client-side only.

AI SEO Meta Optimizer

Generate SEO-optimized meta titles, descriptions, and JSON-LD structured data instantly. Free SERP preview, keyword density analysis, and schema markup generator. No signup required.

Retirement Calculator

Plan your retirement with our free calculator. Estimate how much you need to save, project your nest egg growth, and see if your savings will last through retirement. Pure client-side — your financial data never leaves your device.

Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa. Supports seconds and milliseconds. Real-time current timestamp display.

CSS Clip Path Generator

Generate CSS clip-path shapes visually. Choose from presets or customize your own — circle, ellipse, polygon, inset. Copy ready-to-use CSS instantly. 100% free and client-side.

CSS Specificity Calculator

Calculate CSS selector specificity instantly. Understand selector weight, priority scores, and resolve style conflicts. Enter any CSS selector to see its specificity value in (a,b,c) format. Free and client-side.

CSS Box Shadow Generator

Generate beautiful CSS box shadows with live preview. Adjust horizontal offset, vertical offset, blur radius, spread radius, and color — copy the generated CSS code instantly.

CSS Flexbox Generator

Visually design and generate CSS Flexbox layouts. Preview, tweak properties, and copy the code instantly.

CSS Animation Generator

Create CSS keyframe animations visually. Choose from 16 presets, customize timing, and copy the code instantly.

CSS Grid Generator

Visually design and generate CSS Grid layouts. Customize rows, columns, gaps, and alignment. Preview and copy the code instantly.

CSS Grid Generator

Design CSS Grid layouts visually. Set rows, columns, gaps, and areas — copy ready-to-use CSS instantly. Perfect for responsive web design. 100% free and client-side.

Cron Expression Generator & Parser

Generate, parse, and validate cron expressions instantly. Get human-readable descriptions and preview next execution times. Supports standard 5-field cron, 6-field (with seconds), and 7-field formats. 100% client-side — no data sent to servers.

Text Summarizer

Extract key sentences from any article, essay, or document instantly. Pure client-side, no data sent to servers.

AI Punctuation Adder

Automatically add punctuation to unpunctuated text. Perfect for speech-to-text transcripts, dictated notes, and raw text cleanup.

Placeholder Image Generator

Generate custom placeholder images in any size and color for your web design mockups and prototypes. Pure client-side, instant download.

Keyboard Tester

Free online keyboard tester to check if every key on your keyboard works. Visual QWERTY layout with real-time key detection and detailed event info. Pure client-side.

Palindrome Checker

Check if your text is a palindrome. Supports case-insensitive mode, ignore spaces/punctuation, and batch line checking.

Number to Words Converter

Convert any number into written English words instantly. Perfect for writing checks, invoices, legal documents, and formal reports. Supports up to 999 trillion. Pure client-side.

Due Date Calculator

Calculate your pregnancy due date using last menstrual period (LMP), conception date, or ultrasound. Track trimesters, milestones, and fetal development. 100% private — all in your browser.

Accurate Conception Calculator

Accurate conception calculator — calculate your exact conception date instantly. Use last menstrual period (LMP), due date, or ultrasound to find when you conceived. 100% private, free, and accurate — all calculations happen in your browser.

Ovulation Calculator

Track your menstrual cycle, predict ovulation day, fertile window, and next period date. 100% private — all calculations happen in your browser.

Pregnancy Week Calculator

Calculate your current pregnancy week, trimester, due date, and track key milestones. Enter your last menstrual period (LMP) or due date to get instant results.

Pregnancy Weight Gain Calculator

Calculate healthy pregnancy weight gain based on your pre-pregnancy BMI. Get personalized weekly recommendations following IOM medical guidelines.

Contraction Timer

Track your labor contractions with this free online timer. Measure contraction duration and intervals to know when it's time to go to the hospital. Pure client-side — your data stays private.

Chmod Calculator

Calculate Linux file permissions instantly. Toggle read, write, and execute bits for owner, group, and others to get the numeric chmod value and command.

GCD & LCM Calculator

Calculate the Greatest Common Divisor (GCD/GCF) and Least Common Multiple (LCM) of two or more numbers. Shows the Euclidean algorithm step-by-step. Free and instant.

Standard Deviation Calculator

Calculate sample standard deviation, population standard deviation, variance, mean, and more. Enter any list of numbers instantly. Free and pure client-side.

Calculadora de Variância

Calcule a variância amostral e a variância populacional para qualquer conjunto de dados. Obtenha detalhamentos passo a passo, desvio padrão, média e mais. Gratuito e totalmente no lado do cliente.

Z-Score Calculator

Calculate the z-score (standard score) for any data point. Find percentiles, tail probabilities, and interpret how far a value is from the mean. Free and pure client-side.

Permutation & Combination Calculator

Calculate permutations (nPr) and combinations (nCr) instantly. Enter n and r values to get results with step-by-step explanations. Free, fast, and client-side.

Tic Tac Toe

Play the classic Tic Tac Toe game online for free. Challenge the computer AI or play with a friend on the same device. No downloads, no signups — just instant fun.

World Clock

Track time across multiple cities and time zones in real time. Free online world clock with 20+ major cities. Pure client-side, instant updates.

Mean Median Mode Calculator

Free online calculator to find mean, median, mode, range, and other descriptive statistics from any data set. Paste numbers and get instant results with step-by-step explanation.

Pearson Correlation Calculator

Calculate the Pearson correlation coefficient between two datasets instantly. Free online correlation calculator with step-by-step breakdown, scatter plot preview, and interpretation. Supports comma and newline separated values. Pure client-side, no ads.

Quartile Calculator

Free online quartile calculator. Calculate first quartile (Q1), median (Q2), third quartile (Q3), interquartile range (IQR), and five-number summary from any data set. Paste numbers and get instant results with step-by-step explanation.

PDF Merger

Merge multiple PDF files into one document instantly. Drag and drop PDFs, reorder them, and download the combined file. 100% free, no upload, no watermark.

PDF Compressor

Compress PDF files to reduce their size while maintaining readable quality. Choose compression level, preview savings, and download instantly. 100% client-side — no upload to servers.

PDF Splitter

Split PDF files into individual pages or extract specific pages. Upload a PDF, choose your split method, and download the pages you need. 100% client-side — no upload to servers.

Anagram Solver

Solve anagrams and unscramble letters instantly. Enter any set of jumbled letters and find all possible words. Free online anagram solver with a built-in dictionary of 5,000+ words. No signup needed.

Factorial Calculator

Calculate the factorial of any non-negative integer n! Supports large numbers with BigInt, shows step-by-step multiplication, digit count, and scientific notation. Free and instant.

Prime Number Calculator

Check if a number is prime, generate lists of prime numbers in any range, find the Nth prime, and perform prime factorization. Free, instant, and 100% client-side.

Savings Goal Calculator

Calculate exactly how much you need to save each month to reach your financial goal. Factor in your current savings, interest rate, and timeline to create a realistic savings plan. Pure client-side, instant results.

Debt Payoff Calculator

Calculate how long it will take to pay off your debts using the snowball or avalanche method. See your payoff timeline, total interest, and savings compared to minimum payments.

CD Calculator

Calculate the maturity value and total interest earned on a Certificate of Deposit (CD). Enter your deposit amount, APY, term length, and compounding frequency to see exactly how much your money will grow. Pure client-side, instant results.

Color Temperature Converter

Convert color temperature in Kelvin to RGB values instantly. Visual preview, light source reference table, and HEX output. Pure client-side — no data sent anywhere.

Image to PDF Converter

Convert images to PDF instantly. Upload JPG, PNG, WebP or GIF files, choose page settings, and download your PDF. 100% free, no upload, no watermark.

JSON to YAML Converter

Convert JSON data to YAML format instantly in your browser. Free, private, no server upload. Supports file upload, validation, and download.

YAML to JSON Converter

Convert YAML data to JSON format instantly in your browser. Free, private, no server upload. Supports file upload, validation, and download.

Border Radius Generator

Create perfect CSS rounded corners with a live visual editor. Adjust each corner independently, choose units (px, %, em, rem), and copy ready-to-use CSS instantly. 100% free and client-side.

Text Shadow Generator

Create beautiful CSS text-shadow effects with a live visual editor. Generate soft shadows, glowing text, neon effects, 3D depth and more — copy ready-to-use CSS instantly. 100% free and client-side.

CSS Filter Generator

Generate CSS filter effects visually with real-time preview. Apply blur, brightness, contrast, grayscale, hue-rotate, saturate & more. Upload your image or use sample. Copy ready-to-use CSS instantly. 100% free and client-side.

Online Metronome

Free online metronome with adjustable BPM, time signatures, and accent beats. Perfect for musicians, dancers, and practice sessions. Pure client-side, no download needed.

Tone Generator

Generate precise audio tones from 20Hz to 20kHz. Test speakers, tune instruments, calibrate audio equipment. Pure client-side, no data sent to servers.

Virtual Piano

Free online virtual piano with realistic synthesized sound using Web Audio API. Play with keyboard or mouse, record your melodies, learn chords, and explore preset songs. Pure client-side, no download needed.

Chinese Zodiac Calculator

Discover your Chinese zodiac animal, element, and personality traits based on your birth year. Learn about compatibility, lucky numbers, and more.

YouTube Tags Generator

Generate optimized YouTube video tags instantly. Boost your video SEO with targeted keywords. Pure client-side, no data sent to servers.

Exponent Calculator

Free online exponent and power calculator. Compute a^b, logarithms, square roots, cube roots, and scientific notation. Instant results, pure client-side.

Business Name Generator

Generate creative, catchy, and brandable business names instantly. Enter keywords, pick your industry and style, and get 10+ unique name ideas. Perfect for startups, shops, and new ventures.

Slogan Generator

Generate creative, catchy, and memorable slogans and taglines for your business, product, or brand instantly. Enter your brand name, pick your industry and tone, and get 10+ unique slogan ideas. Perfect for marketing, branding, and advertising.

Blog Title Generator

Generate creative, catchy, and SEO-optimized blog post titles and headlines instantly. Enter your topic, choose a title type and tone, and get 10+ unique blog title ideas that drive clicks and engagement.

Gerador de Nomes de Banda

Gere nomes de banda únicos e cativantes instantaneamente. Escolha seu estilo musical e obtenha ideias criativas para seu grupo musical, banda ou projeto solo. Nenhum cadastro necessário.

AI Text Humanizer

Transform robotic AI-generated text into natural, human-like writing. Choose your tone, apply smart linguistic patterns, and make any text sound authentically human. Free, instant, and private.

AI Hashtag Generator

Generate optimized hashtags for Instagram, TikTok, Twitter, LinkedIn, and YouTube. Enter a keyword or topic and get relevant, categorized hashtag suggestions instantly. 100% free, no signup, client-side only.

AI Content Rewriter

Rewrite, paraphrase, and optimize your content instantly. Choose from 6 rewriting modes to adapt your text for any platform or audience. 100% free, no signup, client-side only.

Social Media Post Scheduler

Plan and preview social media posts for Twitter/X, Instagram, Facebook, and LinkedIn. Check character limits, preview appearance, and get optimal posting times.

Text to Emoji Converter

Convert any text into emoji-filled messages instantly. Keywords are replaced or decorated with matching emojis. Free online tool.

CSS Flexbox Playground

Learn CSS Flexbox with an interactive playground. Adjust properties visually, see instant results, and copy the generated CSS code. Free online tool for developers.

CSS Triangle Generator

Generate pure CSS triangles, arrows, and directional indicators with a live visual editor. Choose from 12 preset directions, customize size and color, and copy production-ready CSS instantly. No images needed — 100% client-side.

Loading Spinner Generator

Generate pure CSS loading spinners and animated loaders with a live visual editor. Choose from 10+ spinner types, customize size, color, and animation speed, and copy production-ready CSS instantly. No images needed — 100% client-side.

CSS Button Generator

Design beautiful CSS buttons with live preview. Customize colors, gradients, shadows, borders, hover effects and more. Copy the generated CSS instantly. 100% client-side.

Screen Color Test

Test your monitor for dead pixels, stuck pixels and color accuracy with full-screen solid colors. No installation needed.

CSS Tooltip Generator

Design beautiful CSS tooltips with live preview. Customize position, colors, arrows, animations, and copy the generated CSS instantly. 100% client-side.

Ratio Calculator

Simplify ratios, solve proportions, and compare values. Enter two or more numbers to find their simplest ratio form instantly.

Proportion Calculator

Solve proportion equations (a/b = c/d), scale recipes, and split quantities by ratio. Enter three known values to find the fourth, or divide a total by a given ratio.

Lottery Number Generator

Generate lucky lottery numbers for Powerball, Mega Millions, EuroMillions, 6/49, and custom formats. 100% free online tool.

Signature Generator

Create elegant handwritten digital signatures instantly. Choose from 8+ cursive fonts, customize colors, size, and style. Download your signature as PNG. Pure client-side — no data leaves your browser.

Fuel Cost Calculator

Calculate fuel costs for road trips. Enter distance, fuel efficiency, and price to estimate total gas expenses. Split costs among passengers. Pure client-side.

Gas Mileage Calculator

Calculate your vehicle's fuel economy instantly. Convert between MPG (US/UK), L/100km, and km/L. Get fuel efficiency ratings and cost estimates. Pure client-side, free, no data collection.

Screen DPI Calculator

Calculate your screen DPI (dots per inch) or PPI (pixels per inch) instantly. Enter resolution and diagonal size to see pixel density, sharpness rating, and compare with common devices. 100% free and client-side.

Depth of Field Calculator

Calculate depth of field, hyperfocal distance, near and far focus limits for any camera sensor, lens, and aperture. Essential tool for photographers to achieve perfect focus. Pure client-side.

Area Calculator

Calculate the area of 8 common geometric shapes — rectangle, square, circle, triangle, trapezoid, parallelogram, rhombus, and ellipse. Instant results with formulas shown. Pure client-side.

Circle Calculator

Free online circle calculator. Enter any one value (radius, diameter, circumference, or area) and instantly calculate all other circle measurements with formulas and step-by-step solutions.

Volume Calculator

Calculate the volume and surface area of 6 common 3D shapes — sphere, cube, cylinder, cone, rectangular prism, and pyramid. Instant results with formulas shown. Supports multiple units. Pure client-side.

Calculadora de Volume de Terra

Calcule exatamente quanta terra você precisa para seus canteiros elevados, vasos, canteiros e floreiras. Receba recomendações de sacos, proporções de mistura de terra e estimativas de custo instantaneamente. Suporta unidades métricas e imperiais.

Angle Converter

Convert between all angle units instantly: degrees, radians, gradians, arcminutes, arcseconds, revolutions, and milliradians. Real-time conversion with formulas and reference table.

Collatz Conjecture Calculator

Explore the famous 3n+1 Collatz conjecture. Enter any positive integer and see the complete sequence, total steps, peak value, and a visual chart. Free, instant, and runs entirely in your browser.

Heat Index Calculator

Calculate the heat index (feels-like temperature) based on temperature and humidity. Get heat safety warnings and health recommendations. Pure client-side.

Area Converter

Convert between all area units instantly: square meters, square kilometers, square feet, square inches, square yards, square miles, acres, and hectares. Real-time conversion with formulas and reference table.

Force Converter

Convert between all force units instantly: newtons, kilonewtons, dynes, kilogram-force, pound-force, ounce-force, poundals, meganewtons, and millinewtons. Real-time conversion with formulas and reference table.

Power Converter

Convert instantly between all power units: watts, kilowatts, megawatts, milliwatts, horsepower, metric horsepower, BTU per hour, calories per second, joules per second and kilojoules per second. Real-time conversion with formulas and reference table.

Speed Converter

Convert between all speed and velocity units instantly: miles per hour, kilometers per hour, meters per second, knots, feet per second, mach, and more. Real-time conversion with formulas and reference table.

Torque Converter

Convert torque units instantly: Newton-meter, kilogram-force meter, pound-force foot, pound-force inch, dyne centimeter, and more. Free online tool with real-time conversion.

Volume Converter

Convert between all volume and capacity units instantly: milliliters, liters, gallons, quarts, pints, cups, fluid ounces, tablespoons, teaspoons, cubic meters, and more. Real-time conversion with formulas and reference table.

NPV Calculator

Calculate the Net Present Value (NPV) of any investment or project with custom cash flows and discount rate. See investment decision guidance, profitability index, payback period, benchmark comparison, and visual charts. Pure client-side, instant results.

Habit Tracker

Track your daily habits with a visual calendar, streak counter & completion stats. Pure frontend, no signup required — all data stays in your browser.

Tabata Timer

Free online Tabata timer for high-intensity interval training. Customize work/rest intervals, track rounds, with audio cues and visual countdown. No signup needed.

Interval Timer

Free online interval timer for HIIT, Tabata, EMOM, and circuit training. Customize work/rest intervals, warm-up, cool-down, with audio cues and visual progress. No signup needed.

Breathing Exercise Timer

Free guided breathing exercise timer with visual breath cues. Practice 4-7-8, box breathing, coherent breathing, and more. Reduce stress and improve focus instantly. No signup needed.

White Noise Generator

Generate free white, pink, and brown noise instantly in your browser. Use it for sleep, focus, relaxation, or to mask distracting sounds. No downloads, no signups — pure ambient sound generated locally.

Ideal Weight Calculator

Calculate your ideal body weight using scientifically validated formulas: Robinson, Miller, Devine, and Hamwi. Supports both Metric and Imperial units. Pure client-side.

Temperature Converter

Convert temperatures instantly between Celsius, Fahrenheit and Kelvin. Real-time bidirectional conversion with formulas and reference table. Pure client-side.

Meeting Time Planner

Find the perfect meeting time for participants in different time zones. Visual working hours overlap, instant local time conversion, and one-click sharing. Pure client-side.

Meeting Cost Calculator

Calculate how much your meetings cost in real time. Enter attendee salaries and duration to see the total cost per meeting. Pure client-side.

CSS Unit Converter

Convert any CSS value between px, rem, em, vw, vh, %, pt, pc, ch, ex, cm, mm, and in. Set your base font size and viewport dimensions for accurate real-time conversion. Pure client-side.

Ohm's Law Calculator

Calculate voltage, current, resistance, and power using Ohm's Law. Enter any two values to find the other two instantly. Pure client-side.

Resistor Color Code Calculator

Decode resistor color bands to resistance value, tolerance, and temperature coefficient. Supports 4-band, 5-band, and 6-band resistors. Reverse lookup available.

LED Resistor Calculator

Calculate the ideal series resistor for any LED circuit instantly. Enter supply voltage, LED forward voltage, and desired current to get the resistor value, nearest standard resistor, power dissipation, and color code.

Decibel Calculator

Calculate decibels for power and voltage ratios. Convert between dB, dBm, dBW, and dBV instantly. Perfect for audio engineers, RF engineers, and electronics hobbyists. Pure client-side.

Work Hours Calculator

Free online work hours calculator. Enter your start and end times, add breaks, and instantly get your total hours, regular time, and overtime. Perfect for employees and freelancers. 100% client-side.

Significant Figures Calculator

Free online significant figures calculator. Instantly count significant figures in any number and round to your desired precision. Perfect for chemistry, physics, and engineering students.

Responsive Design Tester

Test how your website looks on different screen sizes and devices. Preview your site on mobile, tablet, and desktop resolutions with a single click. Perfect for web developers and designers to ensure responsive design compatibility.

SVG Shape Generator

Free online SVG shape generator. Create rectangles, circles, ellipses, lines, polygons, and paths with a visual editor. Edit fill, stroke, opacity, and geometry in real time. Copy SVG code or download the file instantly.

Dog Age Calculator

Convert your dog's age to human-equivalent years based on breed size. More accurate than the old "times 7" rule. Pure client-side.

Cat Age Calculator

Convert your cat's age to human-equivalent years. More accurate than the old "times 7" rule. Pure client-side, instant results.

Dog Name Generator

Generate the perfect name for your dog or puppy. Browse thousands of unique, cute, tough, funny, and classic dog names. Filter by gender and style to find the ideal name for your new best friend.

Love Calculator

Free online love calculator. Calculate love compatibility and relationship match percentage between two names using the classic FLAMES algorithm. Fun, shareable, and entertaining!

Random Quote Generator

Discover inspirational, motivational, and wisdom quotes from famous authors. Copy, share, and get inspired daily!

Internet Speed Test

Test your internet connection speed in seconds. Measure download speed, upload speed, and ping latency with our free online speed test tool. No ads, instant results, pure client-side.

Glassmorphism Generator

Free online CSS glassmorphism generator. Create beautiful frosted glass UI effects with real-time preview. Adjust transparency, blur, saturation, color, border radius, and shadow. Copy-ready CSS code.

Neumorphism Generator

Free online CSS neumorphism generator. Create beautiful soft UI (neumorphic) effects with real-time preview. Adjust intensity, blur, color, and shape. Copy-ready CSS code.

CSS Pattern Generator

Free online CSS pattern generator. Create seamless background patterns (stripes, dots, checkerboard, grid, diagonal lines) with customizable colors and size. Copy-ready CSS code.

Bingo Card Generator

Generate free printable bingo cards instantly. Create custom word bingo or classic number bingo (1-75) for classrooms, parties, and events. Print or download as image.

Flashcard Maker

Create, study, and share flashcards online for free. Perfect for exam preparation, language learning, and memorization. Flip cards, track progress, and study at your own pace. 100% client-side — your data stays private.

Life Path Number Calculator

Calculate your Life Path Number from your birth date. Discover your destiny, personality traits, strengths, challenges, and life purpose based on numerology. Free, private, and instant.

Image to ASCII Art

Free online image to ASCII art converter. Upload any image and instantly convert it into text-based ASCII art with adjustable resolution, character sets, and contrast. Pure client-side processing — no server uploads.

Break-Even Calculator

Calculate your break-even point in units and revenue instantly. Enter fixed costs, variable costs, and selling price to find when your business starts making profit. Supports target profit analysis. Pure client-side.

Download Time Calculator

Calculate how long it takes to download any file — from 1GB to 60GB to 100GB+. Enter file size and internet speed to get instant download time estimates. Supports 3G, 4G, 5G, WiFi, and fiber connections. 100% free and private.

Data Usage Calculator

Estimate your monthly internet data usage based on your online activities. Calculate streaming, gaming, video calls, and browsing consumption to find the perfect internet plan. 100% client-side.

Bandwidth Calculator

Free online bandwidth calculator. Calculate download time, upload time, or required bandwidth instantly. Supports multiple units. Pure client-side, no ads.

Upload Time Calculator

Estimate how long it takes to upload any file based on your internet speed. Compare 3G, 4G, 5G, and fiber upload times instantly. 100% client-side.

Fraction Calculator

Add, subtract, multiply, and divide fractions with step-by-step solutions. Simplify results instantly. Supports mixed numbers and improper fractions. 100% free.

Decimal to Fraction Calculator

Convert any decimal number to a simplified fraction instantly. Get step-by-step conversion, mixed number format, and percentage equivalent. Free and private.

HTML to Text

Paste HTML code and instantly extract clean plain text. Removes all tags, scripts, styles, and comments. 100% client-side.

HTTP Status Code Reference

Complete reference guide for all HTTP status codes (1xx, 2xx, 3xx, 4xx, 5xx). Search, filter, and understand every response code with explanations, common causes, and solutions.

CSS Scrollbar Generator

Create custom CSS scrollbar styles with live preview. Adjust width, colors, track, thumb, and hover effects. Generate cross-browser CSS for WebKit and Firefox instantly. 100% client-side.

CSS Text Effect Generator

Create stunning CSS text effects online. Generate neon, 3D, glitch, gradient, typing, and glow effects with live preview and copy-paste CSS code.

Image Rotator & Flipper

Rotate and flip images online for free. Rotate 90°, 180°, 270°, or any custom angle. Flip horizontally or vertically. 100% client-side — your images never leave your device.

Overtime Pay Calculator

Calculate overtime pay instantly. Enter your regular hourly rate and hours worked to see total earnings with overtime breakdown. Supports multiple overtime rules including time-and-a-half and double time.

Ring Size Converter

Free online ring size converter. Convert between US, UK, EU, Japan, China, and India ring sizes. Visual ring sizer, measurement guide, and printable ruler included.

Shoe Size Converter

Free online shoe size converter. Convert between US, UK, EU, CM (Japan), and AU shoe sizes. Complete size charts for men, women, and kids.

SEO Meta Tag Analyzer

Analyze and generate SEO meta tags for your website. Check Open Graph, Twitter Cards, title, description and get instant SEO score. Free online SEO audit tool.

Keyword Density Checker

Analyze keyword density, word frequency, and content optimization for SEO. Paste your text to discover top keywords, their density percentages, and stop-word filtering. Free, instant, and 100% client-side.

Syllable Counter

Count the number of syllables in any English text instantly. Get word-by-word breakdown, average syllables per word, and identify multi-syllable words. 100% client-side.

Decision Maker

Can't decide? Get instant Yes, No, or Maybe answers with our free online decision maker. Features Magic 8-Ball mode, custom options, statistics tracking, and smooth animations.

Memory Game

Free online memory card matching game. Flip cards, find pairs, and train your brain. Multiple difficulty levels, emoji themes, and progress tracking. No signup needed.

Minesweeper

Play the classic Minesweeper game online for free. Clear the minefield without detonating any bombs. Three difficulty levels, timer, and flag counter. No downloads needed.

Snake Game

Play the classic Snake game online for free. Navigate the snake, eat food, grow longer, and avoid hitting walls or yourself. Multiple speeds, score tracking, and mobile-friendly controls.

Sliding Puzzle

Play the classic 15 Sliding Puzzle game online for free. Slide numbered tiles to arrange them in order. Challenge your mind with this timeless logic puzzle. No downloads needed.

Slot Machine

Play a free online slot machine game with no download required. Spin the reels, match symbols, and win virtual credits. Pure client-side fun with animated reels and sound effects.

2048 Game

Play 2048, the addictive number puzzle game. Slide tiles, merge numbers, and reach the 2048 tile. Free, no signup, works on desktop and mobile.

Tetris

Play the classic Tetris block puzzle game online for free. Stack falling blocks, clear lines, and survive as long as you can. Keyboard and mobile touch controls.

Wordle Game

Play Wordle online for free! Guess the 5-letter word in 6 tries. Daily challenge + unlimited practice mode. Track stats, share results, and challenge friends. No download needed.

Maze Generator

Generate free printable maze puzzles instantly. Choose from multiple difficulty levels and sizes, solve them online, or download as an image. Perfect for kids, educators, and puzzle enthusiasts.

pH Calculator

Calculate pH, pOH, hydrogen ion concentration [H⁺], and hydroxide ion concentration [OH⁻] instantly. Includes a visual pH scale and common substance reference table. Pure client-side.

SMD Resistor Calculator

Decode SMD resistor codes instantly. Supports 3-digit, 4-digit, and EIA-96 coding systems. Calculate resistance values from surface-mount resistor markings. Pure client-side.

Ceramic Capacitor Code Calculator

Decode ceramic and SMD capacitor numeric codes instantly. Convert 3-digit markings to capacitance values in pF, nF, and µF. Includes tolerance codes and reference tables.

LED Resistor Calculator

Calculate the ideal series resistor for any LED circuit instantly. Enter supply voltage, LED forward voltage, and desired current to get the resistor value, nearest standard resistor, power dissipation, and color code.

Rock Paper Scissors

Play the classic Rock Paper Scissors game online for free against the computer. Track your wins, losses, and streaks. No downloads, no signups — instant fun.

Website Ping Test

Check if any website is online and measure its response time instantly. Free uptime checker with visual status indicators and ping history. 100% client-side, no data sent to servers.

Uptime Calculator

Calculate uptime percentage, allowed downtime, and SLA compliance for any time period. Essential for DevOps, SREs, and system administrators.

Invisible Character Detector

Detect invisible, zero-width, and hidden Unicode characters in any text. Spot malicious hidden characters, zero-width spaces, and non-printable control characters instantly. 100% private, works offline.

Moon Phase Calculator

Discover the current moon phase for any date. View illumination percentage, moon age, next full moon & new moon dates. Beautiful visual moon display. 100% client-side.

Online Ruler — 1 CM & Inch Screen Measure

Free online ruler to measure 1 cm, inches, and any length on your screen. Calibrate to your display DPI for accurate real-world measurements. Perfect for quick online measurements without downloads.

Word Scramble

Play Word Scramble game online for free. Unscramble letters to find hidden words, track your score and streaks, or use the solver to decode any jumbled letters. No downloads needed.

Hangman

Play the classic Hangman word guessing game online for free. Guess the hidden word letter by letter. Choose from multiple categories and difficulty levels. No downloads, no signups — just instant fun.

Mastermind

Play the classic Mastermind code-breaking game online for free. Crack the secret color code in 10 tries. Choose Easy or Hard mode. No downloads, no signups — just pure logic fun.

UTM Campaign URL Builder

Build UTM-tagged tracking URLs for your marketing campaigns. Generate campaign links with source, medium, term, content parameters. Export to CSV.

Unit Price Calculator

Calculate the unit price of products to compare deals and find the best value. Enter price and quantity for two items to see which is cheaper per unit. 100% free.

What Is My IP?

Instantly find your public IPv4/IPv6 address. Simple, fast, and 100% free. No signup required.

Paint Calculator

Calculate exactly how much paint you need for any room. Enter dimensions, doors, windows, and coverage to get gallons required with waste factor. Free online tool.

Wind Chill Calculator

Calculate the wind chill factor and real feel temperature. Enter air temperature and wind speed to get the perceived temperature and safety recommendations.

Protein Calculator

Calculate your daily protein needs based on weight, activity level, and fitness goals. Get personalized protein recommendations with food source examples. Free online tool.

Word Cloud Generator

Turn any text into a stunning visual word cloud. Customize colors, shapes, and fonts. Filter stop words automatically. Download as PNG or SVG. Pure client-side — no data leaves your browser.

Hourly Rate Calculator

Calculate your freelance or consulting hourly rate based on target annual income, taxes, business expenses, and profit margin. Visual income breakdown. Free online tool.

Voice Recorder

Record voice and audio instantly in your browser. No downloads, no signups, no data collection. Click record, speak, stop, and download your audio file. Free and private.

Random Sentence Generator

Generate natural, readable English sentences instantly. Perfect for creative writing prompts, language learning, placeholder text, and testing. 100% client-side.

Sample Size Calculator

Free online sample size calculator for research and surveys. Calculate the required sample size for mean estimation or proportion estimation. Choose confidence level, margin of error, and population characteristics. Instant results, pure client-side.

To-Do List

Simple and powerful online to-do list manager. Add, complete, and organize tasks with local storage. No account needed.

Handwriting Converter

Convert typed text into realistic handwriting images. Choose from multiple handwriting fonts, customize paper style, ink color, and download as PNG. Perfect for notes, assignments, and creative projects.

PayPal Fee Calculator

Calculate PayPal transaction fees instantly. See how much you will receive after fees or how much to send so the recipient gets the full amount. Pure client-side.

Social Media Image Size Guide

Complete reference for social media image dimensions in 2026. Find optimal sizes for Instagram, Facebook, Twitter, YouTube, LinkedIn, TikTok, and Pinterest. One-click copy.

Sales Commission Calculator

Calculate sales commission instantly. Enter sales amount and commission rate to see your earnings. Supports flat and tiered commission structures. Free, private, no registration.

Blood Pressure Calculator

Enter your systolic and diastolic blood pressure readings to instantly see your BP category (Normal, Elevated, Hypertension Stage 1/2, or Crisis) and get actionable health advice. 100% client-side.

Dew Point Calculator

Calculate the dew point temperature instantly from air temperature and relative humidity. Understand comfort levels and condensation risk. Pure client-side.

Binaural Beats Generator

Generate free binaural beats instantly in your browser. Choose from Delta, Theta, Alpha, Beta, and Gamma brainwave presets for meditation, sleep, focus, and relaxation. Pure client-side, no downloads.

Tally Counter

A simple, free online tally counter. Click to increment, decrement, or reset. Perfect for counting people, items, scores, laps, and more.

Rule of 72 Calculator

Estimate how long it takes to double your investment using the Rule of 72. Enter an annual interest rate to see the approximate doubling time. Reverse mode also available. Pure client-side, instant results.

Special Characters

Browse, search, and copy 1,000+ special characters, Unicode symbols, emojis, math signs, arrows, currency symbols, and more. Free, fast, and instant copy-paste.

ASCII Table

Free online ASCII table reference. Searchable ASCII character chart with decimal, hex, octal, binary values, printable characters, and control codes. Pure client-side, no data sent to servers.

Breadcrumb Schema Generator

Generate Schema.org BreadcrumbList JSON-LD structured data for Google rich snippets. Build breadcrumb navigation markup instantly. Free, client-side, no data sent to servers.

FAQ Schema Generator

Generate Schema.org FAQPage JSON-LD structured data instantly. Add FAQ rich snippets to your website for better Google search results. Free, client-side, no API needed.

Review & Rating Schema Generator

Generate Schema.org Review + AggregateRating JSON-LD structured data instantly. Add star ratings to Google search results for higher CTR. Free, client-side, no API needed.

Random Date Generator

Generate random dates within any range. Perfect for testing, scheduling, and data generation. 100% free online tool.

HowTo Schema Generator

Generate Google-ready HowTo structured data (JSON-LD) for your step-by-step guides. Boost SEO with rich snippets instantly.

Confidence Interval Calculator

Calculate statistical confidence intervals for sample means and proportions. Choose confidence level, input sample data, and get results with visualizations.

Military Time Converter

Convert between military time (24-hour format) and standard time (12-hour AM/PM format). Instant conversion, no signup required. Pure client-side.

Image to Text Converter

Extract text from images instantly using OCR. Upload any image and convert it to editable text. 100% client-side, private, and free.

Handwriting to Text Converter

Convert handwritten notes, letters, and documents into editable digital text using advanced OCR. Upload a photo of your handwriting and get clean, editable text instantly. 100% free and private.

Tournament Bracket Generator

Create professional single-elimination tournament brackets online. Enter team or player names, generate a printable bracket, and track winners round by round. Perfect for sports, esports, gaming, and office competitions.

Salary Calculator

Convert between annual salary, monthly salary, weekly wage, daily wage, and hourly rate. Estimate take-home pay after taxes for US, China, UK, and EU. Pure client-side.

Density Calculator

Calculate density instantly from mass and volume. Supports kg/m³, g/cm³, lb/ft³, and more. Includes reference table for 50+ common substances. Pure client-side.

Margin of Error Calculator

Free online margin of error calculator. Calculate confidence intervals for survey data. Supports 90%, 95%, 99% confidence levels. Perfect for students, researchers, and data analysts.

Website Speed Test

Test your website speed instantly. Measure page load time, TTFB, DOM ready, and resource loading with the browser Performance API. No server required — pure client-side testing.

Add Line Breaks

Automatically add line breaks after sentences in your text. Handles abbreviations, quoted text, and CJK punctuation. Free, instant, and 100% client-side.

List Style Generator

Generate CSS list styles with live preview. Choose from standard bullets, numbers, emojis, custom images, and more. Copy the CSS code instantly. Pure client-side.

CSS Stepper Generator

Design beautiful CSS steppers and multi-step wizards with live preview. Customize layouts, styles, states, icons, and step labels — copy the generated CSS and HTML instantly.

Gerador de Abas CSS

Projete belos componentes de abas CSS com visualização ao vivo. Personalize estilos, posições, animações e cores.

CSS Dropdown Menu Generator

Design beautiful CSS dropdown menus with live preview. Customize styles, directions, animations, and colors — copy the generated CSS and HTML instantly.

Log Calculator

Calculate logarithms with any base, natural log (ln), and common log (log10). Includes logarithmic properties, change of base formula, and step-by-step explanations.

Antilog Calculator

Calculate antilogarithms (inverse logs) with any base. Supports common antilog (base 10), natural antilog (base e), binary antilog (base 2), and custom bases. Instant results with step-by-step explanations.

SIP Calculator

Calculate returns on your Systematic Investment Plan (SIP). See total investment, expected returns, wealth gained, and year-by-year growth projection. Supports step-up SIP, inflation adjustment, and reverse target calculation.

Lorem Ipsum Generator

Generate professional Lorem Ipsum placeholder text instantly. Control paragraphs, sentences, and words. Copy as plain text or HTML. Perfect for designers, developers, and content creators.

Zodiac Sign Calculator

Discover your Western zodiac sign instantly based on your birth date. Learn about your astrological sign, element, ruling planet, personality traits, and compatibility. Free, instant, and 100% client-side.

Dead Pixel Test

Free online dead pixel test tool. Detect stuck pixels, dead pixels, and hot pixels on your monitor, laptop, or phone screen. Use full-screen color tests in black, white, red, green, blue, and more.

AI Product Description Generator

Generate compelling product descriptions instantly for your e-commerce store, website, or marketing. Choose a style, enter product details, and get professional copy that converts. 100% free, client-side only.

AI Story Generator

Generate unique creative stories in seconds. Choose a genre, enter a theme, and get a complete short story with characters, plot, and resolution. 100% free, no signup, client-side only.

Arc Length Calculator

Calculate arc length, sector area, and chord length for any circle sector. Enter radius and central angle to get instant results with formulas shown.

BAC Calculator

Estimate your blood alcohol content (BAC) based on drinks consumed, body weight, gender, and time elapsed. Pure client-side calculator using the Widmark formula.

Birthday Calculator

Calculate how many days until your next birthday. Find your age, zodiac sign, birth day of the week, and birthday countdown. Pure client-side.

Braille Converter

Convert text to Braille characters instantly. Free, client-side tool — supports Grade 1 Braille for letters, numbers, and punctuation.

BTU Calculator

Calculate the required BTU for your room air conditioner. Factor in room size, insulation, sunlight, climate, and occupants. Get AC type recommendations instantly.

CAC Calculator

Free online CAC calculator. Calculate Customer Acquisition Cost (CAC), total marketing spend, or number of new customers acquired. Essential for SaaS, e-commerce, and digital marketing teams. Pure client-side, no ads.

Carbon Footprint Calculator

Estimate your personal carbon footprint with this free online calculator. Get actionable insights to reduce your environmental impact. Pure client-side, no data sent.

Circumference Calculator

Calculate circle circumference, radius, and diameter instantly. Free online circumference calculator with unit conversion and visual diagram. Supports cm, m, in, ft.

Concrete Calculator

Calculate concrete volume for slabs, footings, columns, and stairs. Estimate bags needed and total cost. Supports metric and imperial units.

CPM Calculator

Free online CPM calculator. Calculate Cost Per Mille (CPM), total campaign cost, or total impressions for advertising campaigns. Essential for media buying and digital marketing. Pure client-side, no ads.

Calculadora de CTR

Calculadora de CTR gratuita online. Calcule a taxa de cliques para Google Ads, Facebook Ads, campanhas de email e qualquer marketing digital. Compare com benchmarks da indústria. 100% do lado do cliente, sem anúncios.

Bounce Rate Calculator

Free online bounce rate calculator. Calculate bounce rate, bounced emails, or total emails sent for your email campaigns. Compare against industry benchmarks. Pure client-side, no ads.

Cron Expression Generator

Generate and parse cron expressions online. Get human-readable descriptions, next execution times, and validation. Free, instant, and 100% client-side.

CSV to Markdown Table

Convert CSV data to Markdown table format instantly. Paste your CSV, choose options, and get clean Markdown tables ready for GitHub, docs, and more.

Gerador de Tabelas Markdown

Converta dados CSV ou TSV instantaneamente para sintaxe de tabela Markdown limpa. Delimitadores, linhas de cabeçalho e alinhamento personalizáveis. Perfeito para READMEs, documentação e GitHub.

Cube Root Calculator

Calculate cube roots instantly with our free online calculator. Find perfect cubes, simplify radical expressions, and see precise results. Pure client-side, no ads.

Cycling Pace Calculator

Calculate your cycling speed, distance, or time. Supports km/h, mph, and m/s. Plan your rides with preset distances and split times. Pure client-side.

Fraction to Decimal Calculator

Convert any fraction to a decimal instantly. Supports proper fractions, improper fractions, and mixed numbers. Get step-by-step conversion with percentage equivalent. Free and private.

Monitor Gamma Calibration

Test and calibrate your monitor gamma value online. Adjust gamma settings to ensure accurate color display and smooth gray gradients.

Great Circle Distance Calculator

Calculate the great circle distance between two GPS coordinates using the Haversine formula. Supports latitude and longitude inputs with results in kilometers, miles, and nautical miles. Free online tool.

Hourly to Salary Calculator

Convert your hourly wage to annual, monthly, weekly, and daily salary instantly. Customize working hours and weeks per year. Pure client-side calculation.

HTML Entity Encoder / Decoder

Encode special HTML characters into HTML entities and decode them back. Convert text with <, >, &, ", ' into &lt;, &gt;, &amp;, &quot;, &apos; and vice versa. Pure client-side, instant conversion.

HTML Encoder / Decoder

Encode and decode HTML entities instantly. Convert special characters to named or numeric HTML entities and back. Pure client-side, no data sent to servers.

Intermittent Fasting Calculator

Plan your intermittent fasting schedule with precision. Calculate fasting windows, eating periods, and weekly schedules for popular methods like 16:8, 18:6, 20:4, 5:2, and OMAD.

Language Detector

Detect the language of any text instantly using pure statistical analysis. Supports 50+ languages with confidence scores. No API calls, 100% private, works completely offline in your browser.

Magic 8 Ball

Ask the Magic 8 Ball any yes-or-no question and get an instant mystical answer. Fun, free, and completely random — no data leaves your browser.

Mortgage Refinance Calculator

Calculate whether refinancing your mortgage makes sense. Compare your current loan vs a new loan, see monthly savings, total interest savings, and break-even point.

NATO Phonetic Alphabet Converter

Convert text to/from the NATO phonetic alphabet instantly. Free, client-side tool — perfect for spelling names and codes over the phone.

Guitar Chord Finder

Find any guitar chord instantly with interactive diagrams. Browse 100+ chords across all keys with fretboard visualization and finger placement.

NPS Calculator

Calculate your Net Promoter Score (NPS) instantly. Enter promoter, passive, and detractor counts to see NPS score, distribution breakdown, and benchmark comparison. Pure client-side, zero latency.

Prime Number Checker

Check if any number is prime. Get instant results with factorization, prime factors, and nearby primes. Free, fast, and 100% client-side.

Probability Calculator

Free online probability calculator. Calculate simple probability, conditional probability (Bayes theorem), joint probability, permutations (nPr), combinations (nCr), and complementary probability. Instant results with formula explanations.

Random Letter Generator

Generate random letters from the alphabet instantly. Pick single or multiple letters, choose uppercase or lowercase, with or without duplicates. Pure client-side, no data sent to servers.

Random MAC Address Generator

Generate random MAC addresses instantly. Choose formats (colon, hyphen, dot), specify OUI prefix, and bulk generate. 100% client-side.

Sentence Counter

Free online sentence counter. Instantly count the number of sentences in your text. Also shows word count, character count, and average sentence length.

Slope Calculator

Calculate slope between two points, find y-intercept, and get the linear equation in slope-intercept and point-slope forms. Perfect for algebra and geometry problems.

Square Root Calculator

Calculate square roots instantly with our free online calculator. Find perfect squares, simplify radicals, and see step-by-step solutions. Pure client-side, no ads.

Sudoku

Free online Sudoku puzzle solver and generator. Play classic 9x9 Sudoku with multiple difficulty levels, auto-check, hints, and solve any puzzle instantly. No signup needed.

Text Repeater

Free online text repeater. Repeat any text, string, word, or sentence multiple times with custom separators. Perfect for testing, formatting, and content generation. Pure client-side, no ads.

Venn Diagram Generator

Free online Venn diagram generator. Create customizable 2-set and 3-set Venn diagrams to visualize set relationships, compare groups, and illustrate logical intersections. Download as PNG or SVG. No signup needed.

Waist-to-Hip Ratio Calculator

Calculate your waist-to-hip ratio (WHR) and assess your health risk. Pure client-side calculator using WHO standards.

White Noise Generator

Generate free white, pink, and brown noise instantly in your browser. Use it for sleep, focus, relaxation, or to mask distracting sounds. No downloads, no signups — pure ambient sound generated locally.

Engagement Rate Calculator

Calculate social media engagement rate for Instagram, Twitter, TikTok, Facebook, LinkedIn, and YouTube. Compare against platform benchmarks and get actionable insights.

XML to JSON Converter

Convert XML documents to JSON and vice versa instantly. Supports attributes, namespaces, CDATA, and nested elements. Free, fast, and 100% client-side.

Potential Energy Calculator

Calculate gravitational potential energy instantly using mass, height, and gravity. Supports kg, g, lb and m, ft, cm. Shows formula, step-by-step calculation, and results in Joules, kJ, cal, and BTU. Pure client-side.

Elastic Potential Energy Calculator

Calculate elastic potential energy stored in a spring using spring constant and displacement. Supports N/m, N/cm, lb/in and m, cm, mm, in, ft. Shows formula, step-by-step calculation, and results in Joules, kJ, cal, BTU, erg, and eV. Pure client-side.

IBAN Validator

Validate IBAN numbers instantly. Check bank account correctness, verify country format, and detect errors before transfers. Free online IBAN checker — no data stored.

Eisenhower Matrix

Organize and prioritize your tasks using the Eisenhower Matrix. Categorize tasks by urgency and importance to focus on what truly matters. Free, private, and works offline.

Gitignore Generator

Free online .gitignore file generator. Create perfect gitignore files for Node.js, Python, Java, Go, React, Django, and 30+ other languages and frameworks. Combine templates and add custom patterns.

Speaking Time Calculator

Calculate how long it takes to speak any text aloud. Perfect for presentations, podcasts, speeches, and voiceovers. Supports multiple speaking speeds and pause adjustments. 100% private.

Gravel Calculator

Free online gravel calculator. Calculate how much gravel, stone, or pebbles you need for your driveway, path, garden, or landscaping project. Supports metric and imperial units.

Coffee Ratio Calculator

Calculate the perfect coffee-to-water ratio for any brewing method. Supports Pour Over, French Press, AeroPress, Espresso, Cold Brew, and Moka Pot. Get precise measurements in grams, ounces, or cups.

A/B Test Calculator

Free online A/B test calculator. Calculate statistical significance, p-value, confidence intervals, and required sample size for your split tests. Optimize conversion rates with data-driven decisions. Pure client-side, no ads.

AdSense Revenue Calculator

Estimate your Google AdSense revenue based on page views, CTR, and CPC. Calculate daily, monthly, and yearly earnings instantly. Pure client-side with no data sent to servers.

Codificador / Decodificador Base32

Codifique texto para Base32 e decodifique Base32 de volta para texto instantaneamente. Suporta o padrão RFC 4648. Puro cliente, sem upload para servidor.

Binary to Text Converter

Convert binary code to plain text instantly. Paste space-separated or continuous binary strings and decode them to readable ASCII characters. Pure client-side, no data sent to servers.

Burn Rate & Runway Calculator

Free online burn rate and runway calculator for startups. Calculate monthly burn rate, cash runway, and break-even revenue. Plan your startup finances and avoid running out of cash. Pure client-side.

Caffeine Calculator

Calculate your total daily caffeine intake from coffee, tea, energy drinks, soda, and chocolate. Track consumption levels and get personalized health insights.

Visualizador FEN de Xadrez

Visualize instantaneamente posições do tabuleiro de xadrez a partir de strings FEN (Notação Forsyth-Edwards). Insira qualquer string FEN válida e veja o tabuleiro renderizado com todas as peças no lugar. 100 % do lado do cliente, visualizador de xadrez gratuito online.

Color Blindness Simulator

Free online color blindness simulator. Upload any image to instantly see how it appears to people with Deuteranopia, Protanopia, Tritanopia, or Achromatopsia. Test your UI designs, color palettes, and images for accessibility.

CPA Calculator

Free online CPA calculator. Calculate cost per acquisition, total ad spend, or required conversions for your marketing campaigns. Compare against industry benchmarks for ecommerce, SaaS, B2B, and more. Pure client-side, no ads.

CPC Calculator

Free online CPC calculator. Calculate cost per click, total ad spend, or required clicks for your PPC campaigns. Compare against industry benchmarks for Google Ads, Facebook, and more. Pure client-side, no ads.

Crypto Profit Calculator

Calculate your cryptocurrency profit or loss instantly. Enter your buy price, sell price, and investment amount to see profit/loss, ROI percentage, and break-even price. Supports Bitcoin, Ethereum, and any altcoin.

CSS Accordion Generator

Design beautiful CSS accordions and collapsible panels with live preview. Customize styles, sizes, animations, icons, and behavior — copy the generated CSS and HTML instantly.

CSS Border Gradient Generator

Generate beautiful CSS gradient border effects for modern web design. Create linear, radial, and conic gradient borders with live preview. Customize colors, width, radius, and copy production-ready CSS instantly.

Gerador de Breadcrumbs CSS

Crie lindos breadcrumbs CSS com visualização em tempo real. Gere breadcrumbs com vários estilos, separadores e cores personalizáveis — tudo com código CSS pronto para copiar.

CSS Form Input Generator

Generate beautiful, accessible CSS form inputs in seconds. Choose from text, password, email, textarea, and select types. Customize styles, states, labels, and icons — copy the CSS instantly.

CSS Hover Effect Generator

Create beautiful CSS hover effects for buttons and cards with live preview. Generate lift, glow, scale, rotate, ripple, border draw, and more — all with copy-paste CSS code.

CSS Modal Generator

Design stunning CSS modal dialogs and popups with live preview. Customize animations, styles, sizes, backdrop effects, and buttons — copy the generated CSS and HTML instantly.

CSS Pagination Generator

Design beautiful CSS pagination components with live preview. Customize styles, sizes, shapes, colors, and navigation options — copy the generated CSS and HTML instantly.

CSS Ribbon Generator

Generate beautiful CSS ribbons, corner banners, and promotional badges in seconds. Choose from 6 styles, 4 positions, and custom colors — copy the CSS instantly.

CSS Toast Notification Generator

Design beautiful CSS toast notifications and alert messages with live preview. Customize types, positions, animations, styles, and colors — copy the generated CSS, HTML, and JavaScript instantly.

Gerador de Tooltips CSS

Crie lindos tooltips CSS com visualização ao vivo.

Email Open Rate Calculator

Free online email open rate calculator. Calculate open rate, opens needed, or emails delivered for your email marketing campaigns. Compare against industry benchmarks. Pure client-side, no ads.

Emergency Fund Calculator

Calculate how much emergency savings you need based on your monthly expenses. Discover your 3-month, 6-month, and 12-month emergency fund targets and track your progress toward financial security.

Gantt Chart Generator

Free online Gantt chart generator. Create beautiful project timelines with task bars, milestones, and dependencies. Plan projects, manage tasks, and visualize schedules. Export as PNG. No signup needed, pure client-side.

Calculadora da Proporção Áurea

Calcule proporções áureas instantaneamente. Insira qualquer dimensão e obtenha o valor perfeito da proporção áurea para design, arte e layout. 100% do lado do cliente — seus dados nunca saem do seu dispositivo.

HTML Beautifier

Free online HTML formatter and beautifier. Format messy HTML with proper indentation, or minify HTML for production. 100% client-side, no server uploads.

Kinetic Energy Calculator

Calculate kinetic energy instantly using mass and velocity. Supports kg, g, lb and m/s, km/h, mph, ft/s. Shows formula, step-by-step calculation, and results in Joules, kJ, cal, and BTU. Pure client-side.

Calculadora de Markup

Calculadora de markup gratuita online. Calcule o preço de venda a partir do custo e da porcentagem de markup, ou encontre a porcentagem de markup a partir do custo e do preço de venda. Resultados instantâneos, puramente do lado do cliente.

Mastermind

Play the classic Mastermind code-breaking game online for free. Crack the secret color code in 10 tries. Choose from Easy or Hard mode. No downloads, no signups — just pure logic fun.

Random Adjective Generator

Generate random adjectives instantly. Perfect for writers, students, game designers, and creative projects. Filter by category, starting letter, and length. Copy results with one click.

Random Verb Generator

Generate random verbs instantly. Perfect for writers, students, game designers, and creative projects. Filter by category, starting letter, and length. Copy results with one click.

Customer Retention Rate Calculator

Free online customer retention rate calculator. Calculate retention rate, required retention targets, and projected customer counts. Compare against SaaS industry benchmarks. Pure client-side.

Social Media Preview

Preview how your webpage looks when shared on Facebook, Twitter/X, and LinkedIn. Paste your HTML or meta tags to see card previews instantly. Optimize your Open Graph and Twitter Card tags for maximum engagement.

Solar Panel Calculator

Estimate how many solar panels you need, calculate potential energy production, and see your savings. Based on roof size, location, and electricity usage. Pure client-side.

Surface Area Calculator

Calculate the surface area of 5 common 3D shapes — cube, rectangular prism, sphere, cylinder, and cone. Instant results with formulas shown. Pure client-side.

Text Similarity Checker

Compare two texts and measure their similarity using Levenshtein distance, Jaccard index, and word overlap analysis. Free, instant, client-side.

Would You Rather Generator

Generate random Would You Rather questions instantly. Filter by category — funny, deep, gross, couples, kids, work & more. Vote, share, and spark conversations!

YouTube Money Calculator

Estimate your YouTube ad revenue based on views, CPM, and RPM. Calculate daily, monthly, and yearly earnings instantly. Pure client-side with no data sent to servers.

Instagram Money Calculator

Estimate your Instagram earnings based on followers, engagement rate, and niche. Calculate sponsored posts, affiliate income, Reels bonuses, and subscription revenue instantly.

Twitter / X Money Calculator

Estimate your Twitter/X earnings based on followers, impressions, engagement rate, and niche. Calculate ad revenue share, sponsored tweets, subscriptions, and affiliate income instantly.

Facebook Money Calculator

Estimate your Facebook Page earnings based on followers, reach, engagement rate, and content type. Calculate in-stream ad revenue, Reels monetization, branded content, Stars, subscriptions, and affiliate income instantly.

LinkedIn Money Calculator

Estimate your LinkedIn monetization potential based on connections, post impressions, engagement rate, industry, and role. Calculate consulting revenue, lead generation value, recruitment earnings, B2B sales pipeline, content sponsorships, and course income instantly.

Blood Type Calculator

Predict your child's possible blood types based on parents' blood types. Includes ABO group and Rh factor inheritance with probability percentages.

Tower of Hanoi

Play the classic Tower of Hanoi puzzle online. Move disks between pegs following the rules. Choose your difficulty and solve it in minimum moves. Free, no signup.

Baby Name Generator

Generate meaningful baby names from 10+ cultures. Filter by gender, origin, meaning, and length. 1000+ names with meanings and pronunciations. Pure client-side, instant results.

Packing List Generator

Create a personalized packing list for your trip in seconds. Select destination, duration, weather, and activities to generate a smart checklist. Free, printable, and 100% client-side.

URL Expander

Expand shortened URLs and track redirect chains. See where bit.ly, t.co, tinyurl and other short links really lead. Pure client-side with redirect chain visualization.

Tire Size Calculator

Calculate tire diameter, circumference, revolutions per mile, and speedometer error when switching tire sizes. Compare OEM and aftermarket tire specs instantly. Pure client-side — no data sent to servers.

Eisenhower Matrix

Organize and prioritize your tasks using the Eisenhower Matrix. Categorize tasks by urgency and importance to focus on what truly matters. Free, private, and works offline.

File Hash Generator

Free online file hash generator. Calculate MD5, SHA1, SHA256, and SHA512 checksums instantly in your browser. Verify file integrity, compare hashes, and ensure downloads are authentic. No upload required — 100% client-side.

Plank Calculator

Generate a personalized plank training program based on your current ability and goals. Create progressive workout plans with week-by-week hold times, sets, rest periods, and visual progress charts. Pure client-side, no ads.

Python Formatter

Format and beautify your Python code instantly online. Fix indentation, standardize quotes, clean up spacing, and make your code PEP 8 compliant. 100% client-side — no code sent to servers.

Connect Four

Play the classic Connect Four game online for free. Drop discs to connect four in a row — horizontally, vertically, or diagonally. Two-player mode or play against the AI. Pure client-side, no downloads required.

Mulch Calculator

Calculate exactly how much mulch you need for your garden beds. Enter dimensions and desired depth to get cubic yards, cubic feet, or number of bags. Free online tool.

Meditation Timer

Free online meditation timer with soothing bell sounds and calming visual cues. Set your session duration, choose interval bells, and meditate in peace. No signup required.

Free Fall Calculator

Calculate free fall time, final velocity, and distance under gravity. Supports Earth, Moon, Mars, Jupiter, and custom gravity values. Perfect for physics students and educators.

White Noise Generator

Free online white noise generator with pink noise, brown noise, rain sounds, and wind sounds. Help sleep, focus, and relax. Pure client-side, no data sent to servers.

Receipt Generator

Generate professional receipts instantly in your browser. Fill in business details, add line items, apply tax, and print or download as PDF. No signup required.

Student Loan Calculator

Calculate student loan payments, total interest, and repayment timelines. Supports deferment, interest-only, and immediate repayment options. Compare federal and private loan scenarios with pure client-side calculations.

GPS Coordinates Converter

Convert GPS coordinates between Degrees Minutes Seconds (DMS) and Decimal Degrees instantly. Get map links for any location. Pure client-side, privacy-safe.

Online Metronome

Free online metronome with adjustable BPM, time signatures, and accent beats. Perfect for musicians, dancers, and practice sessions. Pure client-side, no download needed.

Wind Chill Calculator

Calculate the wind chill factor and real feel temperature. Enter air temperature and wind speed to get the perceived temperature and safety recommendations.

Uptime Calculator

Calculate uptime percentage, allowed downtime, and SLA compliance for any time period. Essential for DevOps, SREs, and system administrators.

NATO Phonetic Alphabet Converter

Free online NATO phonetic alphabet converter. Instantly convert text to Alpha, Bravo, Charlie phonetic spelling and decode back. Supports full words, abbreviations, and custom separators. Pure client-side, no data sent to servers.

Age Difference Calculator

Calculate the exact age difference between two people. Find the age gap in years, months, and days. Free, private, and works instantly in your browser.

CSS Box Shadow Generator

Generate beautiful CSS box shadows with live preview. Adjust horizontal offset, vertical offset, blur radius, spread radius, and color — copy the generated CSS code instantly.

Pomodoro Timer

Free online Pomodoro timer with customizable work/break intervals, session tracking, and audio alerts. Stay focused with the classic 25-5 technique. No signup, no ads.

SWOT Analysis Generator

Create professional SWOT analysis matrices instantly. Input your strengths, weaknesses, opportunities, and threats to generate a visual strategic planning chart. Export as image or copy as formatted text. 100% client-side.

Validador de Email

Valide endereços de email instantaneamente com nosso validador de email online gratuito. Verifique a sintaxe do formato, analise a estrutura e verifique os domínios. 100% do lado do cliente, nenhum dado é enviado aos servidores.

HTML Validator

Valide a sintaxe HTML instantaneamente com nosso validador HTML online gratuito. Verifique tags não fechadas, atributos malformados, erros de aninhamento e garanta que seu markup seja válido. 100% do lado do cliente.

AI Job Description Generator

Generate professional, compelling job descriptions in seconds. Enter your job title, company, and requirements to get a complete, ready-to-post job listing.

Base58 Encoder / Decoder

Encode and decode Base58 and Base58Check instantly. Bitcoin-compatible with checksum validation. Pure client-side, no data sent to servers.

Business Card Generator

Design professional business cards instantly. Choose from multiple templates, customize colors, fonts, and layout. Print-ready output with one-click PDF export. No signup required.

cURL Command Generator

Build and generate cURL commands instantly. Configure HTTP method, URL, headers, query params, and body to get the perfect cURL snippet for API testing and debugging.

Fantasy Name Generator

Generate magical fantasy names for elves, dwarves, dragons, orcs, wizards, and more. Perfect for RPG characters, D&D campaigns, game development, and creative writing.

Online Guitar Tuner

Free online guitar tuner with standard E-A-D-G-B-E tuning. Play reference tones for each string to tune your acoustic or electric guitar. Pure client-side, no microphone needed.

Joke Generator

Generate hilarious jokes, puns, and one-liners instantly. Choose from categories like dad jokes, knock-knock jokes, puns, and more. Perfect for lightening the mood or sharing with friends.

Periodic Table of Elements

Free interactive periodic table with all 118 chemical elements. Explore atomic numbers, symbols, weights, electron configurations, and element properties. Click any element for detailed information.

TikTok Money Calculator

Estimate your TikTok earnings based on followers, views, engagement rate, and niche. Calculate Creator Fund, brand deals, live gifts, and affiliate income instantly.

YAML Beautifier

Beautify and prettify your YAML documents instantly with our free online YAML beautifier. Clean indentation, readable structure, and syntax highlighting. 100% client-side, no data sent to servers.

YAML Validator

Validate your YAML documents instantly with our free online YAML validator. Check syntax, detect errors with line numbers, and ensure well-formed YAML. 100% client-side, no data sent to servers.

555 Timer Calculator

Calculate timing values for the classic NE555 timer IC in astable ( oscillator) and monostable (one-shot) modes. Enter resistor and capacitor values to get frequency, period, duty cycle, or pulse width instantly. Pure client-side.

Betting Odds Calculator

Free online betting odds calculator. Convert between decimal, fractional, and American odds. Calculate potential payouts, implied probability, and parlay odds instantly. Pure client-side, no ads.

Chord Progression Generator

Free online chord progression generator. Create chord progressions in any key and style. Choose from classic presets or generate random progressions. Perfect for songwriting and music theory practice.

Cookie Policy Generator

Generate a professional, GDPR-compliant cookie policy for your website or app. Covers cookie types, purposes, user consent, and third-party services. Copy as HTML or plain text.

CSS Beautifier

Beautify and prettify CSS code instantly with our free online CSS beautifier. Clean indentation, readable structure, and proper formatting. 100% client-side.

Prettifier CSS

Prettifique e formate código CSS instantaneamente com nosso prettifier CSS online gratuito. Transforme CSS minificado ou desorganizado em uma saída limpa e legível. 100% do lado do cliente.

Validador CSS

Valide a sintaxe CSS instantaneamente com nosso validador CSS online gratuito. Verifique erros, detecte problemas de sintaxe e garanta que suas folhas de estilo sejam válidas. 100% do lado do cliente.

Day of Year Calculator

Calculate what day of the year any date falls on. Instantly see the day number, days remaining in the year, week number, and leap year status. Free online tool — 100% client-side.

Fiber Intake Calculator

Calculate your recommended daily fiber intake based on age, gender, weight, and calorie consumption. Get personalized dietary fiber goals and tips for better digestive health.

Geometric Mean Calculator

Calculate the geometric mean of any set of numbers instantly. Free online geometric average calculator with step-by-step breakdown. Supports comma and newline separated values. Pure client-side, no ads.

Height Calculator

Predict your child's adult height based on parents' heights using the scientifically validated mid-parental height method. Supports both metric (cm) and imperial (inches) units. Pure client-side.

JavaScript Beautifier

Beautify and prettify JavaScript code instantly with our free online JS beautifier. Clean indentation, readable structure, and syntax highlighting. 100% client-side, no data sent to servers.

Mocking Spongebob Text Generator

Convert any text into the iconic MoCkInG SpOnGeBoB sarcasm format. Type your message and instantly get the alternating uppercase/lowercase text perfect for memes, social media, and adding sarcastic flair to your posts.

Molar Mass Calculator

Calculate the molar mass and molecular weight of any chemical formula instantly. Supports complex formulas with parentheses and hydrates. Free, accurate, and 100% client-side.

Molecular Weight Calculator

Calculate the molecular weight (molar mass) of any chemical formula instantly. Supports parentheses, hydrates, and displays element composition breakdown. Pure client-side, no server needed.

Payback Period Calculator

Free payback period calculator. Calculate how long it takes to recover your investment with simple or discounted payback methods. View year-by-year cash flow breakdown and cumulative totals.

Percentile Calculator

Calculate percentile rank, percentile values, and quartiles for any data set. Enter numbers and instantly get Q1, Q2 (median), Q3, and any custom percentile. Free, no signup.

Period Calculator

Predict your next period, track your menstrual cycle, and see a full fertility calendar. 100% private — all calculations happen in your browser.

Pivot Point Calculator

Calculate pivot points, support and resistance levels for trading. Supports Standard, Fibonacci, Woodie, Camarilla, and DeMark methods. Pure client-side.

Random Fact Generator

Discover fascinating random facts across science, history, nature, and more. Expand your knowledge with our free online random fact generator. Perfect for trivia, learning, and fun!

Roofing Calculator

Calculate roof area, pitch, and material estimates instantly. Supports gable, hip, shed, and gambrel roofs. Get shingle, tile, and metal roofing quantities with cost estimates.

Square Footage Calculator

Calculate the square footage of rooms, walls, and floors instantly. Perfect for flooring, painting, tiling, and renovation projects. Supports multiple units and material estimation.

Strikethrough Text Generator

Free online strikethrough text generator. Add single, double, or wavy strikethrough lines to your text instantly. Perfect for social media, editing, and formatting. Pure client-side, no ads.

Subscription Cost Calculator

Free online subscription cost calculator. Track all your monthly and yearly recurring subscriptions — streaming, software, gym, and more. See your total spending instantly. Pure client-side, no ads.

Text Diff

Compare two texts side by side and see differences instantly. Highlight added, removed, and modified lines. Free, fast, and 100% client-side.

Text to Decimal Converter

Free online text to decimal converter. Instantly convert text to ASCII decimal numbers and decimal back to readable text. Pure client-side, no data sent to servers.

TV Size Calculator

Calculate the ideal TV size for your room based on viewing distance and resolution. Supports metric and imperial units. Pure client-side.

Twitch Money Calculator

Estimate your Twitch earnings based on subscribers, average viewers, stream hours, and category. Calculate subscription revenue, bits, ads, donations, and sponsorship income instantly.

Vigenère Cipher Encoder / Decoder

Encode and decode text using the Vigenère cipher, a classic polyalphabetic substitution cipher. Enter a keyword to shift each letter differently. Pure client-side, no data leaves your browser.

Voltage Divider Calculator

Calculate the output voltage of a resistor-based voltage divider circuit instantly. Enter input voltage, resistor R1, and resistor R2 to get the output voltage, current draw, power dissipation, and load regulation.

Week Number Calculator

Calculate the ISO week number for any date. Find the start and end dates of a specific week, determine the total number of weeks in a year, and convert between dates and week numbers instantly.

Word Frequency Counter

Free online word frequency counter. Paste your text to instantly count how many times each word appears. Useful for SEO analysis, content writing, and text statistics. 100% client-side.

ERA Calculator

Calculate Earned Run Average (ERA) for baseball pitchers instantly. Enter earned runs and innings pitched to get ERA with performance ratings. Pure client-side.

WHIP Calculator

Calculate WHIP (Walks + Hits per Innings Pitched) for baseball pitchers instantly. Enter walks, hits, and innings to get WHIP with performance ratings. Pure client-side.

OPS Calculator

Calculate OPS (On-base Plus Slugging) for baseball hitters instantly. Enter hits, walks, at-bats, and extra-base hits to get OBP, SLG, and OPS with performance ratings. Pure client-side.

Slugging Percentage Calculator

Calculate slugging percentage (SLG) for baseball hitters instantly. Enter singles, doubles, triples, home runs, and at-bats to get SLG with power ratings. Pure client-side.

Basketball Stats Calculator

Calculate per-game basketball statistics and advanced efficiency metrics. Enter season totals and games played to get PPG, RPG, APG, SPG, BPG, FG%, 3P%, FT%, EFF, and TS%. Pure client-side.

Basketball Fantasy Points Calculator

Calculate fantasy basketball points for any player using ESPN, Yahoo, DraftKings, or FanDuel scoring rules. Enter stats and instantly see fantasy scores across all platforms. Pure client-side.

Basketball PER Calculator

Calculate Player Efficiency Rating (PER) — the advanced basketball metric invented by John Hollinger. Enter per-game stats to see PER, performance tier, and NBA comparison. Pure client-side.

Basketball Shooting Efficiency Calculator

Analyze basketball shooting efficiency with FG%, eFG%, TS%, Points Per Shot, and Free Throw Rate. Compare against NBA averages by position and get a complete shooting profile. Pure client-side.

Basketball Team Rating Calculator

Calculate basketball team Offensive Rating (ORtg), Defensive Rating (DRtg), Pace, and Net Rating. Analyze team efficiency with NBA benchmarks. Pure client-side.

Basketball Win Probability Calculator

Calculate basketball win probability in real-time based on score differential and time remaining. Uses statistical models to estimate comeback odds. Pure client-side.

Basketball Shot Chart Generator

Create interactive basketball shot charts. Track makes and misses on a visual court diagram, analyze shooting percentages by zone. Pure client-side.

Calculadora de Velocidade do Saque de Tênis

Calcule a velocidade do seu saque de tênis medindo o tempo de voo da linha de base até a caixa de serviço. Compare seus resultados com os padrões profissionais da ATP e WTA. 100% no navegador.

Cricket Strike Rate Calculator

Calculate cricket batting strike rate instantly. Enter runs scored and balls faced to get strike rate with performance ratings for T20, ODI, and Test cricket. Pure client-side.

Wallpaper Calculator

Calculate exactly how many wallpaper rolls you need for any room. Enter dimensions, doors, windows, and wallpaper specs to get the precise roll count. Free online tool.