Free online scientific calculator with trigonometry, logarithms, exponents, factorials, roots & constants. DEG/RAD mode, calculation history, keyboard shortcuts. Pure client-side, instant results.
A powerful yet clean online scientific calculator for advanced math operations. Supports trigonometry (sin, cos, tan and inverse), logarithms (log, ln), exponents, factorials, roots, and mathematical constants (π, e). Toggle between DEG and RAD modes for trigonometry. All calculations happen instantly in your browser — no server, no delay, no data sent anywhere.
Yes, completely free. No registration, no ads, no limits.
Yes. Type numbers and operators directly. Press Enter for =, Escape to clear all, Backspace to delete last digit.
DEG (degrees) and RAD (radians) are two units for measuring angles. DEG is common in everyday use (0-360°), while RAD is standard in advanced math and physics (0-2π). Toggle based on your needs.
Absolutely. All calculations happen inside your browser. Nothing is sent to any server.