ISO A series
A6 paper size
A6 measures 105 x 148 mm (4.13 x 5.83 in). Postcards, pocket notebooks and Japanese bunko paperbacks.
105 x 148millimetres
4.13 x 5.83inches
1,240 x 1,748pixels @ 300 dpi
Dimensions in every unit
| Unit | Width x height |
|---|---|
| Millimetres | 105 x 148 mm |
| Centimetres | 10.5 x 14.8 cm |
| Inches (decimal) | 4.134 x 5.827 in |
| Inches (fraction) | 4 1/8 x 5 13/16 in |
| Points (1/72 in) | 297.6 x 419.5 pt |
| Picas | 24.8 x 34.96 pc |
Pixel dimensions by resolution
| Resolution | Pixels | Megapixels |
|---|---|---|
| 72 dpi | 298 x 420 px | 0.1 MP |
| 96 dpi | 397 x 559 px | 0.2 MP |
| 150 dpi | 620 x 874 px | 0.5 MP |
| 200 dpi | 827 x 1,165 px | 1 MP |
| 300 dpi | 1,240 x 1,748 px | 2.2 MP |
| 600 dpi | 2,480 x 3,496 px | 8.7 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) | 111 x 154 mm | 4.37 x 6.063 in |
| 0.125 in bleed (each side) | 111.4 x 154.4 mm | 4.384 x 6.077 in |
How many A6 fit on a press sheet
| Sheet | Without bleed | With 3 mm bleed |
|---|---|---|
| A4 | 4-up | 2-up |
| A3 | 8-up | 4-up |
| SRA3 | 9-up | 8-up |
| Letter | 2-up | 2-up |
| Tabloid 11 x 17 in | 4-up | 4-up |
| 12 x 18 in | 8-up | 4-up |
| 13 x 19 in (Super B) | 9-up | 8-up |
| B2 (offset) | 18-up | 18-up |
| B1 (offset) | 36-up | 36-up |
Simple grid imposition with no gutters or gripper margin; real layouts may fit fewer.
Envelopes for A6
| Fold | Folded size | Envelopes that fit |
|---|---|---|
| Unfolded | 105 x 148 mm | C6 envelope, A6 envelope, DL envelope |
| Folded in half | 74 x 105 mm | C7 envelope, C7/C6 envelope, #6¾ envelope |
| Folded in thirds | 49.3 x 105 mm | C7 envelope, C7/C6 envelope |
The √2 system
A6 has an aspect ratio of 1 : 1.4095 — 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 A6?
A6 is 105 x 148 mm, which is 4.13 x 5.83 in (4 1/8 x 5 13/16 in).
How many pixels is A6 at 300 DPI?
1,240 x 1,748 pixels at 300 dpi, or 620 x 874 at 150 dpi.
Sources & data
- Dimensions per the relevant standard; see sources.