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.
| Print Size | Inches | Pixels at 300 DPI |
|---|---|---|
| 3R (3.5×5") | 3.5 × 5 | 1050 × 1500 |
| 4R (4×6") | 4 × 6 | 1200 × 1800 |
| 5R (5×7") | 5 × 7 | 1500 × 2100 |
| 8R (8×10") | 8 × 10 | 2400 × 3000 |
| A4 | 8.27 × 11.69 | 2480 × 3508 |
| A5 | 5.83 × 8.27 | 1748 × 2480 |
| Letter | 8.5 × 11 | 2550 × 3300 |
| Legal | 8.5 × 14 | 2550 × 4200 |
| Business Card | 3.5 × 2 | 1050 × 600 |
| Postcard | 6 × 4 | 1800 × 1200 |
| Social Media Square | 1 × 1 | 1080 × 1080 |
| Social Media Story | 9 × 16 | 1080 × 1920 |
Print Size Calculator helps designers, photographers, and print professionals quickly convert between pixel dimensions and physical print sizes. Simply enter your image dimensions and desired DPI (dots per inch) to see the exact print size in inches, centimeters, and millimeters. You can also work backwards — enter a desired print size and DPI to find the minimum pixel resolution you need.
DPI (Dots Per Inch) is the resolution of a printed image. Higher DPI means more detail and sharper prints. 300 DPI is standard for professional printing, 150 DPI is good for most home printing, 96 DPI is typical for screens, and 72 DPI is the web standard.
Divide the pixel dimensions by the DPI. For example, a 3000×2000 pixel image at 300 DPI will print at 10×6.67 inches. Use our calculator to instantly get results in inches, cm, and mm.
For a sharp 4×6 inch print at 300 DPI, you need at least 1200×1800 pixels. At 150 DPI, 600×900 pixels is acceptable for casual viewing. Use our reverse calculator to find the exact pixel dimensions for any print size.
300 DPI is the industry standard for professional photo prints, brochures, and magazines. For large format prints (posters, banners) that will be viewed from a distance, 150 DPI is often sufficient.
Yes, completely free. No ads, no registration, no limits. All calculations happen locally in your browser — your data never leaves your device.