ISO A series
4A0 paper size
4A0 measures 1682 x 2378 mm (66.22 x 93.62 in). The largest A-format sheet, for giant posters.
1682 x 2378millimetres
66.22 x 93.62inches
19,866 x 28,087pixels @ 300 dpi
Dimensions in every unit
| Unit | Width x height |
|---|---|
| Millimetres | 1682 x 2378 mm |
| Centimetres | 168.2 x 237.8 cm |
| Inches (decimal) | 66.22 x 93.622 in |
| Inches (fraction) | 66 1/4 x 93 5/8 in |
| Points (1/72 in) | 4767.9 x 6740.8 pt |
| Picas | 397.32 x 561.73 pc |
Pixel dimensions by resolution
| Resolution | Pixels | Megapixels |
|---|---|---|
| 72 dpi | 4,768 x 6,741 px | 32.1 MP |
| 96 dpi | 6,357 x 8,988 px | 57.1 MP |
| 150 dpi | 9,933 x 14,043 px | 139.5 MP |
| 200 dpi | 13,244 x 18,724 px | 248 MP |
| 300 dpi | 19,866 x 28,087 px | 558 MP |
| 600 dpi | 39,732 x 56,173 px | 2231.9 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) | 1688 x 2384 mm | 66.457 x 93.858 in |
| 0.125 in bleed (each side) | 1688.4 x 2384.4 mm | 66.47 x 93.872 in |
The √2 system
4A0 has an aspect ratio of 1 : 1.4138 — 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.
Similar sizes
Frequently asked questions
What are the dimensions of 4A0?
4A0 is 1682 x 2378 mm, which is 66.22 x 93.62 in (66 1/4 x 93 5/8 in).
How many pixels is 4A0 at 300 DPI?
19,866 x 28,087 pixels at 300 dpi, or 9,933 x 14,043 at 150 dpi.
Sources & data
- Dimensions per the relevant standard; see sources.