ISO C series (envelopes)
DIN E4 envelope size
DIN E4 envelope measures 280 x 400 mm (11.02 x 15.75 in). Part of the ISO C series (envelopes).
Dimensions in every unit
| Unit | Width x height |
|---|---|
| Millimetres | 280 x 400 mm |
| Centimetres | 28 x 40 cm |
| Inches (decimal) | 11.024 x 15.748 in |
| Inches (fraction) | 11 x 15 3/4 in |
| Points (1/72 in) | 793.7 x 1133.9 pt |
| Picas | 66.14 x 94.49 pc |
Pixel dimensions by resolution
| Resolution | Pixels | Megapixels |
|---|---|---|
| 72 dpi | 794 x 1,134 px | 0.9 MP |
| 96 dpi | 1,058 x 1,512 px | 1.6 MP |
| 150 dpi | 1,654 x 2,362 px | 3.9 MP |
| 200 dpi | 2,205 x 3,150 px | 6.9 MP |
| 300 dpi | 3,307 x 4,724 px | 15.6 MP |
| 600 dpi | 6,614 x 9,449 px | 62.5 MP |
300 dpi is the usual target for printed photos and artwork; 72–96 dpi is screen resolution.
Document size with bleed
| Bleed | Millimetres | Inches |
|---|---|---|
| 3 mm bleed (each side) | 286 x 406 mm | 11.26 x 15.984 in |
| 0.125 in bleed (each side) | 286.4 x 406.4 mm | 11.274 x 15.998 in |
How many DIN E4 envelope fit on a press sheet
| Sheet | Without bleed | With 3 mm bleed |
|---|---|---|
| A3 | 1-up | 1-up |
| SRA3 | 1-up | 1-up |
| 12 x 18 in | 1-up | 1-up |
| 13 x 19 in (Super B) | 1-up | 1-up |
| B2 (offset) | 2-up | 2-up |
| B1 (offset) | 4-up | 4-up |
Simple grid imposition with no gutters or gripper margin; real layouts may fit fewer.
The √2 system
DIN E4 envelope has an aspect ratio of 1 : 1.4286 — close to √2 (1.4142). Folding or cutting it in half across the long side produces the next smaller size in the series with the same proportions, and two sheets side by side form the next larger size. This is why scaling between sizes in the series (for example on a photocopier) never crops or distorts the page.
This size is listed in the Wikipedia article on paper sizes under “International envelope and insert sizes”. Historic and regional sizes can vary between sources and mills.
Similar sizes
Frequently asked questions
What are the dimensions of DIN E4 envelope?
How many pixels is DIN E4 envelope at 300 DPI?
Sources & data
- Listed in the Wikipedia article “Paper size” (CC BY-SA 4.0).