A 20×30" print at 300 DPI needs about 6000×9000 px (~54 MP). Lower DPI needs fewer pixels if viewing distance allows.
Recommended pixels
For photo-quality close viewing, aim for 300 DPI (6000×9000). For posters viewed from farther away, 150–200 DPI can work.
Pixels needed by DPI
| DPI | Pixels |
|---|---|
| 72 | 1440 × 2160 |
| 100 | 2000 × 3000 |
| 150 | 3000 × 4500 |
| 200 | 4000 × 6000 |
| 240 | 4800 × 7200 |
| 300 | 6000 × 9000 |
| 600 | 12000 × 18000 |
FAQ
How many pixels for a 20×30" print?
At 300 DPI: 6000×9000. See the table for other DPI targets.