Letter Paper Size
Letter paper measures 8.5 × 11 in (215.9 × 279.4 mm). It is the standard office and home page size in the United States and Canada, the North American counterpart to A4.
Letter measures 215.9 millimetres wide and 279.4 millimetres tall.
Letter Dimensions in Each Unit
Letter is 215.9 × 279.4 mm, which is 21.6 × 27.9 cm or 8.5 × 11 in.
| Unit | Width | Height | Width × height | Copy |
|---|---|---|---|---|
| Millimetres (mm) | 215.9 | 279.4 | 215.9 × 279.4 mm | |
| Centimetres (cm) | 21.6 | 27.9 | 21.6 × 27.9 cm | |
| Metres (m) | 0.216 | 0.279 | 0.216 × 0.279 m | |
| Inches (in) | 8.5 | 11 | 8.5 × 11 in | |
| Feet (ft) | 0.71 | 0.92 | 0.71 × 0.92 ft | |
| Points (pt) | 612 | 792 | 612 × 792 pt | |
| Picas (pc) | 51 | 66 | 51 × 66 pc | |
| Pixels at 72 DPI | 612 | 792 | 612 × 792 px | |
| Pixels at 150 DPI | 1275 | 1650 | 1275 × 1650 px | |
| Pixels at 300 DPI | 2550 | 3300 | 2550 × 3300 px | |
| Pixels at 600 DPI | 5100 | 6600 | 5100 × 6600 px |
Pixel counts follow from the resolution: pixels = millimetres ÷ 25.4 × DPI. More on the DPI and pixels page.
Letter Shape and Area
| Aspect ratio | 1 : 1.294 |
|---|---|
| Area | 0.0603 m² · 60,322 mm² |
| Diagonal | 353.1 mm · 13.9 in |
| Closest ISO size | A4 |
| Governing standard | American National Standard |
Letter to Scale
Put Letter next to another size in the comparison tool.
Frequently Asked Questions
What is the size of US Letter paper?
Letter is 8.5 by 11 inches, which is 215.9 by 279.4 mm or 21.6 by 27.9 cm.
Is 8.5 by 11 Letter or A4?
8.5 by 11 inches is US Letter. A4 is 8.27 by 11.69 inches, which is narrower and taller.
Is Letter the same as A4?
No. Letter is 216 by 279 mm and A4 is 210 by 297 mm. They share a printer tray but not a layout, so a shared PDF can lose a footer or gain a margin depending on which one it prints on.
Which countries use Letter instead of A4?
The United States and Canada mainly, plus the Philippines, Chile and parts of Mexico and Colombia. The rest of the world uses A4.
US Paper Sizes
✓ Dimensions per American National Standard; unit values derived by formula. Reviewed . Editorial Process →