3840 × 2160 pixels: print size in inches and centimetres
3840 × 2160 pixels (4K UHD) prints at 12.8 × 7.2 inches at 300 DPI, or 25.6 × 14.4 inches at 150 DPI.
| Megapixels | 8.3 |
|---|---|
| Aspect ratio | 16:9 |
| File size | 24 MB as uncompressed 8-bit RGB |
| Largest sheet at 300 DPI | A5, cropped to fill |
| Largest sheet at 150 DPI | 12 × 18 inch poster, cropped to fill |
3840 × 2160 pixels at each resolution
| Resolution | Inches | Centimetres | Pixels blend from |
|---|---|---|---|
| 72 DPI | 53.33 × 30 | 135.5 × 76.2 cm | 47.7 inches (121 cm) |
| 96 DPI | 40 × 22.5 | 101.6 × 57.2 cm | 35.8 inches (91 cm) |
| 100 DPI | 38.4 × 21.6 | 97.5 × 54.9 cm | 34.4 inches (87 cm) |
| 150 DPI | 25.6 × 14.4 | 65 × 36.6 cm | 22.9 inches (58 cm) |
| 200 DPI | 19.2 × 10.8 | 48.8 × 27.4 cm | 17.2 inches (44 cm) |
| 240 DPI | 16 × 9 | 40.6 × 22.9 cm | 14.3 inches (36 cm) |
| 300 DPI | 12.8 × 7.2 | 32.5 × 18.3 cm | 11.5 inches (29 cm) |
| 400 DPI | 9.6 × 5.4 | 24.4 × 13.7 cm | 8.6 inches (22 cm) |
| 600 DPI | 6.4 × 3.6 | 16.3 × 9.1 cm | 5.7 inches (15 cm) |
| 1200 DPI | 3.2 × 1.8 | 8.1 × 4.6 cm | 2.9 inches (7 cm) |
Pixels have no size until you choose a DPI
An image of 3840 × 2160 pixels is 8.3 million dots of colour and nothing more. It only gets a size in inches when it is printed, and that size is the pixels divided by the resolution: 3840 ÷ 300 = 12.8 inches wide at 300 DPI. On a screen the DPI stored in the file is ignored; the image takes up 3840 × 2160 of the screen’s own pixels.