Quick answer (at 3:2)
At 300 DPI a 40 MP image prints about 25.8 × 17.2 inches (65.6 × 43.7 cm) assuming a 3:2 aspect ratio.
By aspect ratio
3:2
| DPI | Pixels (approx) | Inches | Centimeters |
|---|
| 300 | 7,746 × 5,164 | 25.82 × 17.21 in | 65.6 × 43.7 cm |
| 240 | 7,746 × 5,164 | 32.27 × 21.52 in | 82.0 × 54.7 cm |
| 200 | 7,746 × 5,164 | 38.73 × 25.82 in | 98.4 × 65.6 cm |
| 150 | 7,746 × 5,164 | 51.64 × 34.43 in | 131.2 × 87.4 cm |
4:3
| DPI | Pixels (approx) | Inches | Centimeters |
|---|
| 300 | 7,303 × 5,477 | 24.34 × 18.26 in | 61.8 × 46.4 cm |
| 240 | 7,303 × 5,477 | 30.43 × 22.82 in | 77.3 × 58.0 cm |
| 200 | 7,303 × 5,477 | 36.52 × 27.39 in | 92.7 × 69.6 cm |
| 150 | 7,303 × 5,477 | 48.69 × 36.51 in | 123.7 × 92.7 cm |
1:1
| DPI | Pixels (approx) | Inches | Centimeters |
|---|
| 300 | 6,325 × 6,325 | 21.08 × 21.08 in | 53.6 × 53.6 cm |
| 240 | 6,325 × 6,325 | 26.35 × 26.35 in | 66.9 × 66.9 cm |
| 200 | 6,325 × 6,325 | 31.63 × 31.63 in | 80.3 × 80.3 cm |
| 150 | 6,325 × 6,325 | 42.17 × 42.17 in | 107.1 × 107.1 cm |
16:9
| DPI | Pixels (approx) | Inches | Centimeters |
|---|
| 300 | 8,433 × 4,743 | 28.11 × 15.81 in | 71.4 × 40.2 cm |
| 240 | 8,433 × 4,743 | 35.14 × 19.76 in | 89.2 × 50.2 cm |
| 200 | 8,433 × 4,743 | 42.16 × 23.71 in | 107.1 × 60.2 cm |
| 150 | 8,433 × 4,743 | 56.22 × 31.62 in | 142.8 × 80.3 cm |
How we calculate this
- Convert 40 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.