Quick answer (at 3:2)
At 300 DPI a 42 MP image prints about 26.5 × 17.6 inches (67.2 × 44.8 cm) assuming a 3:2 aspect ratio.
By aspect ratio
3:2
| DPI | Pixels (approx) | Inches | Centimeters |
|---|
| 300 | 7,937 × 5,292 | 26.46 × 17.64 in | 67.2 × 44.8 cm |
| 240 | 7,937 × 5,292 | 33.07 × 22.05 in | 84.0 × 56.0 cm |
| 200 | 7,937 × 5,292 | 39.69 × 26.46 in | 100.8 × 67.2 cm |
| 150 | 7,937 × 5,292 | 52.91 × 35.28 in | 134.4 × 89.6 cm |
4:3
| DPI | Pixels (approx) | Inches | Centimeters |
|---|
| 300 | 7,483 × 5,612 | 24.94 × 18.71 in | 63.4 × 47.5 cm |
| 240 | 7,483 × 5,612 | 31.18 × 23.38 in | 79.2 × 59.4 cm |
| 200 | 7,483 × 5,612 | 37.41 × 28.06 in | 95.0 × 71.3 cm |
| 150 | 7,483 × 5,612 | 49.89 × 37.41 in | 126.7 × 95.0 cm |
1:1
| DPI | Pixels (approx) | Inches | Centimeters |
|---|
| 300 | 6,481 × 6,481 | 21.60 × 21.60 in | 54.9 × 54.9 cm |
| 240 | 6,481 × 6,481 | 27.00 × 27.00 in | 68.6 × 68.6 cm |
| 200 | 6,481 × 6,481 | 32.41 × 32.41 in | 82.3 × 82.3 cm |
| 150 | 6,481 × 6,481 | 43.21 × 43.21 in | 109.7 × 109.7 cm |
16:9
| DPI | Pixels (approx) | Inches | Centimeters |
|---|
| 300 | 8,641 × 4,861 | 28.80 × 16.20 in | 73.2 × 41.2 cm |
| 240 | 8,641 × 4,861 | 36.00 × 20.25 in | 91.5 × 51.4 cm |
| 200 | 8,641 × 4,861 | 43.20 × 24.30 in | 109.7 × 61.7 cm |
| 150 | 8,641 × 4,861 | 57.61 × 32.41 in | 146.3 × 82.3 cm |
How we calculate this
- Convert 42 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.