ISO A series
A0 paper size
A0 measures 841 x 1189 mm (33.11 x 46.81 in). Engineering and architectural drawings, large posters.
841 x 1189millimetres
33.11 x 46.81inches
9,933 x 14,043pixels @ 300 dpi
Dimensions in every unit
| Unit | Width x height |
|---|---|
| Millimetres | 841 x 1189 mm |
| Centimetres | 84.1 x 118.9 cm |
| Inches (decimal) | 33.11 x 46.811 in |
| Inches (fraction) | 33 1/8 x 46 13/16 in |
| Points (1/72 in) | 2383.9 x 3370.4 pt |
| Picas | 198.66 x 280.87 pc |
Pixel dimensions by resolution
| Resolution | Pixels | Megapixels |
|---|---|---|
| 72 dpi | 2,384 x 3,370 px | 8 MP |
| 96 dpi | 3,179 x 4,494 px | 14.3 MP |
| 150 dpi | 4,967 x 7,022 px | 34.9 MP |
| 200 dpi | 6,622 x 9,362 px | 62 MP |
| 300 dpi | 9,933 x 14,043 px | 139.5 MP |
| 600 dpi | 19,866 x 28,087 px | 558 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) | 847 x 1195 mm | 33.346 x 47.047 in |
| 0.125 in bleed (each side) | 847.4 x 1195.4 mm | 33.36 x 47.061 in |
The √2 system
A0 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 A0?
A0 is 841 x 1189 mm, which is 33.11 x 46.81 in (33 1/8 x 46 13/16 in).
How many pixels is A0 at 300 DPI?
9,933 x 14,043 pixels at 300 dpi, or 4,967 x 7,022 at 150 dpi.
Sources & data
- Dimensions per the relevant standard; see sources.