SizeKitSizeKit reference
US Letter Size in Pixels
Calculate US Letter pixels for 72, 96, 150, 300, 600 or custom DPI.
US Letter at 300 DPI is 2550 x 3300 px. At 150 DPI it is 1275 x 1650 px.
Immediate answer
US Letter pixel presets
300 DPI is the common print default; 150 DPI is often acceptable for larger viewing distance; 72/96 DPI are mostly screen or layout references.
300 DPI
2550 x 3300 px
high quality print
150 DPI
1275 x 1650 px
lighter file
96 DPI
816 x 1056 px
screen reference
SizeKit
All common DPI values
Use this table when you need a specific preset.
| DPI | Portrait pixels | Landscape pixels |
|---|---|---|
| 72 DPI | 612 x 792 px | 792 x 612 px |
| 96 DPI | 816 x 1056 px | 1056 x 816 px |
| 150 DPI | 1275 x 1650 px | 1650 x 1275 px |
| 300 DPI | 2550 x 3300 px | 3300 x 2550 px |
| 600 DPI | 5100 x 6600 px | 6600 x 5100 px |
SizeKit
How the calculation works
Pixel dimensions are not fixed until you choose DPI.
px = round((mm / 25.4) x DPI). For A4 at 300 DPI: round((210 / 25.4) x 300) x round((297 / 25.4) x 300) = 2480 x 3508 px.
SizeKit
FAQ
Common pixel-size questions.
Is US Letter always 2550 x 3300 px?
No. 2550 x 3300 px is the 300 DPI value. Pixel dimensions change when DPI changes.
Should I use 300 DPI for print?
300 DPI is a common high-quality print target. 150 DPI can be acceptable for larger viewing distances.