US Letter size in inches, mm and pixels
US Letter is 8.5 × 11 inches (215.9 × 279.4 mm).
Letter size in every unit
| Unit | Width | Height |
|---|---|---|
| Inches | 8.5 in | 11 in |
| Millimetres | 215.9 mm | 279.4 mm |
| Centimetres | 21.59 cm | 27.94 cm |
| Points (1/72 in) | 612 pt | 792 pt |
Letter in pixels
| Resolution | Width | Height | Typical use |
|---|---|---|---|
| 72 dpi | 612 px | 792 px | PDF default (1 pt = 1 px) |
| 96 dpi | 816 px | 1056 px | Browser and screen CSS |
| 150 dpi | 1275 px | 1650 px | Draft print |
| 300 dpi | 2550 px | 3300 px | Standard print |
| 600 dpi | 5100 px | 6600 px | Fine line art |
US Letter at 300 dpi is exactly 2550 × 3300 pixels because both dimensions are whole or half inches. A4 at 300 dpi is not a whole number (2480.3 × 3507.9), which is why exports are rounded.
How big is Letter next to its cousins?
| Size | Inches | Relation to Letter |
|---|---|---|
| Statement (Half Letter) | 5.5 × 8.5 | Letter folded in half |
| Letter | 8.5 × 11 | this page |
| Legal | 8.5 × 14 | same width, 3 in longer |
| Tabloid | 11 × 17 | two Letter sheets side by side |
| Executive | 7.25 × 10.5 | 1.25 in narrower, 0.5 in shorter |
| Government Letter | 8 × 10.5 | 0.5 in narrower, 0.5 in shorter |
The ANSI engineering series treats Letter as ANSI A and builds up from it: two Letter sheets side by side make Tabloid (ANSI B). More on US paper sizes.
Folding Letter into an envelope
Letter folded in thirds is 8.5 × 3.67 inches and fits a No. 10 envelope (4.125 × 9.5 in). Folded in half, it is 5.5 × 8.5 inches and fits an A9 envelope. More options on what envelope for Letter.
Frequently asked questions
What size is Letter paper in mm?
Letter is 215.9 x 279.4 mm, usually rounded to 216 x 279 mm.
What size is Letter in cm?
Letter is 21.59 x 27.94 cm.
What is Letter size in pixels?
2550 x 3300 pixels at 300 dpi, 1275 x 1650 at 150 dpi, 816 x 1056 at 96 dpi and 612 x 792 at 72 dpi.
Is Letter the same as 8.5 x 11?
Yes. Letter is 8.5 by 11 inches.
Is Letter the same as A4?
No. A4 is 210 x 297 mm, 5.9 mm narrower and 17.6 mm taller than Letter.