ISO A series
A10 paper size
A10 measures 26 x 37 mm (1.02 x 1.46 in). Stamps and tiny labels.
26 x 37millimetres
1.02 x 1.46inches
307 x 437pixels @ 300 dpi
Dimensions in every unit
| Unit | Width x height |
|---|---|
| Millimetres | 26 x 37 mm |
| Centimetres | 2.6 x 3.7 cm |
| Inches (decimal) | 1.024 x 1.457 in |
| Inches (fraction) | 1 x 1 7/16 in |
| Points (1/72 in) | 73.7 x 104.9 pt |
| Picas | 6.14 x 8.74 pc |
Pixel dimensions by resolution
| Resolution | Pixels | Megapixels |
|---|---|---|
| 72 dpi | 74 x 105 px | 0 MP |
| 96 dpi | 98 x 140 px | 0 MP |
| 150 dpi | 154 x 219 px | 0 MP |
| 200 dpi | 205 x 291 px | 0.1 MP |
| 300 dpi | 307 x 437 px | 0.1 MP |
| 600 dpi | 614 x 874 px | 0.5 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) | 32 x 43 mm | 1.26 x 1.693 in |
| 0.125 in bleed (each side) | 32.4 x 43.4 mm | 1.274 x 1.707 in |
How many A10 fit on a press sheet
| Sheet | Without bleed | With 3 mm bleed |
|---|---|---|
| A4 | 64-up | 36-up |
| A3 | 128-up | 81-up |
| SRA3 | 144-up | 100-up |
| Letter | 56-up | 40-up |
| Tabloid 11 x 17 in | 112-up | 80-up |
| 12 x 18 in | 136-up | 98-up |
| 13 x 19 in (Super B) | 156-up | 110-up |
| B2 (offset) | 361-up | 242-up |
Simple grid imposition with no gutters or gripper margin; real layouts may fit fewer.
Envelopes for A10
| Fold | Folded size | Envelopes that fit |
|---|---|---|
| Unfolded | 26 x 37 mm | C9 envelope, C8 envelope |
| Folded in half | 18.5 x 26 mm | C10 envelope, C9 envelope, C8 envelope |
| Folded in thirds | 12.3 x 26 mm | C10 envelope, C9 envelope |
The √2 system
A10 has an aspect ratio of 1 : 1.4231 — 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 A10?
A10 is 26 x 37 mm, which is 1.02 x 1.46 in (1 x 1 7/16 in).
How many pixels is A10 at 300 DPI?
307 x 437 pixels at 300 dpi, or 154 x 219 at 150 dpi.
Sources & data
- Dimensions per the relevant standard; see sources.