ISO B series
B6 paper size
B6 measures 125 x 176 mm (4.92 x 6.93 in). Paperback books and postcards.
125 x 176millimetres
4.92 x 6.93inches
1,476 x 2,079pixels @ 300 dpi
Dimensions in every unit
| Unit | Width x height |
|---|---|
| Millimetres | 125 x 176 mm |
| Centimetres | 12.5 x 17.6 cm |
| Inches (decimal) | 4.921 x 6.929 in |
| Inches (fraction) | 4 15/16 x 6 15/16 in |
| Points (1/72 in) | 354.3 x 498.9 pt |
| Picas | 29.53 x 41.57 pc |
Pixel dimensions by resolution
| Resolution | Pixels | Megapixels |
|---|---|---|
| 72 dpi | 354 x 499 px | 0.2 MP |
| 96 dpi | 472 x 665 px | 0.3 MP |
| 150 dpi | 738 x 1,039 px | 0.8 MP |
| 200 dpi | 984 x 1,386 px | 1.4 MP |
| 300 dpi | 1,476 x 2,079 px | 3.1 MP |
| 600 dpi | 2,953 x 4,157 px | 12.3 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) | 131 x 182 mm | 5.157 x 7.165 in |
| 0.125 in bleed (each side) | 131.4 x 182.4 mm | 5.171 x 7.179 in |
How many B6 fit on a press sheet
| Sheet | Without bleed | With 3 mm bleed |
|---|---|---|
| A4 | 2-up | 2-up |
| A3 | 4-up | 4-up |
| SRA3 | 4-up | 4-up |
| Letter | 2-up | 2-up |
| Tabloid 11 x 17 in | 4-up | 4-up |
| 12 x 18 in | 4-up | 4-up |
| 13 x 19 in (Super B) | 4-up | 4-up |
| B2 (offset) | 16-up | 10-up |
| B1 (offset) | 32-up | 25-up |
Simple grid imposition with no gutters or gripper margin; real layouts may fit fewer.
Envelopes for B6
| Fold | Folded size | Envelopes that fit |
|---|---|---|
| Unfolded | 125 x 176 mm | A7 envelope, A9 envelope, 6 x 9 booklet envelope |
| Folded in half | 88 x 125 mm | #6¾ envelope, A2 envelope, C6 envelope |
| Folded in thirds | 58.7 x 125 mm | C7/C6 envelope, #6¾ envelope, A2 envelope |
The √2 system
B6 has an aspect ratio of 1 : 1.408 — 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 B6?
B6 is 125 x 176 mm, which is 4.92 x 6.93 in (4 15/16 x 6 15/16 in).
How many pixels is B6 at 300 DPI?
1,476 x 2,079 pixels at 300 dpi, or 738 x 1,039 at 150 dpi.
Sources & data
- Dimensions per the relevant standard; see sources.