Quick answer (at 3:2)
At 300 DPI a 4 MP image prints about 8.2 × 5.4 inches (20.7 × 13.8 cm) assuming a 3:2 aspect ratio.
By aspect ratio
3:2
| DPI | Pixels (approx) | Inches | Centimeters |
|---|
| 300 | 2,449 × 1,633 | 8.16 × 5.44 in | 20.7 × 13.8 cm |
| 240 | 2,449 × 1,633 | 10.20 × 6.80 in | 25.9 × 17.3 cm |
| 200 | 2,449 × 1,633 | 12.24 × 8.16 in | 31.1 × 20.7 cm |
| 150 | 2,449 × 1,633 | 16.33 × 10.89 in | 41.5 × 27.7 cm |
4:3
| DPI | Pixels (approx) | Inches | Centimeters |
|---|
| 300 | 2,309 × 1,732 | 7.70 × 5.77 in | 19.5 × 14.7 cm |
| 240 | 2,309 × 1,732 | 9.62 × 7.22 in | 24.4 × 18.3 cm |
| 200 | 2,309 × 1,732 | 11.54 × 8.66 in | 29.3 × 22.0 cm |
| 150 | 2,309 × 1,732 | 15.39 × 11.55 in | 39.1 × 29.3 cm |
1:1
| DPI | Pixels (approx) | Inches | Centimeters |
|---|
| 300 | 2,000 × 2,000 | 6.67 × 6.67 in | 16.9 × 16.9 cm |
| 240 | 2,000 × 2,000 | 8.33 × 8.33 in | 21.2 × 21.2 cm |
| 200 | 2,000 × 2,000 | 10.00 × 10.00 in | 25.4 × 25.4 cm |
| 150 | 2,000 × 2,000 | 13.33 × 13.33 in | 33.9 × 33.9 cm |
16:9
| DPI | Pixels (approx) | Inches | Centimeters |
|---|
| 300 | 2,667 × 1,500 | 8.89 × 5.00 in | 22.6 × 12.7 cm |
| 240 | 2,667 × 1,500 | 11.11 × 6.25 in | 28.2 × 15.9 cm |
| 200 | 2,667 × 1,500 | 13.34 × 7.50 in | 33.9 × 19.1 cm |
| 150 | 2,667 × 1,500 | 17.78 × 10.00 in | 45.2 × 25.4 cm |
How we calculate this
- Convert 4 MP to approximate pixels for an aspect ratio.
- Divide each pixel dimension by DPI → inches:
inches = pixels ÷ DPI. - Convert inches to centimeters:
cm = inches × 2.54.