MM to Pixel Calculator
Convert millimeters to pixels accurately for any screen resolution and DPI setting
Conversion Parameters
Conversion Results
Conversion Formula
pixels = millimeters × (DPI / 25.4)
Example: 10mm at 96 DPI = 10 × (96 / 25.4) ≈ 37.8px
Real World Size Comparison
📐 Common Size Reference
| Standard Size | Millimeters | Pixels @ 72 DPI | Pixels @ 96 DPI | Pixels @ 300 DPI |
|---|---|---|---|---|
| Business Card | 85.6 × 53.98 mm | 242.6 × 153 px | 323.5 × 204 px | 1011 × 637.8 px |
| A4 Paper | 210 × 297 mm | 595.3 × 841.9 px | 793.7 × 1122.5 px | 2480 × 3508 px |
| Letter Paper | 215.9 × 279.4 mm | 612 × 792 px | 816 × 1056 px | 2550 × 3300 px |
| Postcard | 148 × 105 mm | 419.5 × 297.6 px | 559.4 × 396.9 px | 1748 × 1240 px |
| 1 Inch Square | 25.4 × 25.4 mm | 72 × 72 px | 96 × 96 px | 300 × 300 px |
| Credit Card | 85.6 × 53.98 mm | 242.6 × 153 px | 323.5 × 204 px | 1011 × 637.8 px |
🎨 Design & Development Tips
Web Design
For web, standard DPI is 96. 1mm ≈ 3.78px. Use relative units (em, rem) for responsive designs.
Mobile Design
Mobile devices have higher PPI (300+). Design with vector graphics for crisp display at any size.
Print Design
Print requires 300+ DPI. Always design at 100% size with CMYK color mode for accurate printing.
UI Elements
Standard button height is 7-10mm (26-38px @96DPI). Touch targets should be at least 9mm (34px).
Typography
Body text should be 3-4mm (11-15px @96DPI). Headings 1.5-2x body size for good hierarchy.
Testing
Always test designs on actual devices. What looks good on your monitor may appear different elsewhere.
Note: This calculator provides pixel approximations based on standard conversion formulas. Actual display may vary depending on device settings, viewing distance, and other factors. For print design, always consult with your printer for specific requirements.