Millimetres to pixels at 72 DPI
At 72 DPI, one millimetre is 2.83 pixels. Multiply millimetres by 2.835 to get pixels.
The formula
Pixels = millimetres ÷ 25.4 × 72. There are 25.4 millimetres in an inch, so one millimetre is 72 ÷ 25.4 = 2.835 pixels. Round the result to a whole pixel.
Millimetres to pixels at 72 DPI
| Millimetres | Pixels |
|---|---|
| 1 mm | 3 px |
| 2 mm | 6 px |
| 3 mm | 9 px |
| 5 mm | 14 px |
| 10 mm | 28 px |
| 15 mm | 43 px |
| 20 mm | 57 px |
| 25 mm | 71 px |
| 30 mm | 85 px |
| 35 mm | 99 px |
| 40 mm | 113 px |
| 45 mm | 128 px |
| 50 mm | 142 px |
| 60 mm | 170 px |
| 70 mm | 198 px |
| Millimetres | Pixels |
|---|---|
| 80 mm | 227 px |
| 90 mm | 255 px |
| 100 mm | 283 px |
| 105 mm | 298 px |
| 148 mm | 420 px |
| 150 mm | 425 px |
| 200 mm | 567 px |
| 210 mm | 595 px |
| 250 mm | 709 px |
| 297 mm | 842 px |
| 300 mm | 850 px |
| 420 mm | 1,191 px |
| 500 mm | 1,417 px |
| 594 mm | 1,684 px |
| 841 mm | 2,384 px |
72 DPI is the old screen convention: early Macintosh displays showed 72 pixels to the inch, matching the 72 points in an inch of type. Many image files still carry a 72 DPI tag for that reason.