ISO B series
B8 paper size
B8 measures 62 x 88 mm (2.44 x 3.46 in). Playing cards (approximately).
62 x 88millimetres
2.44 x 3.46inches
732 x 1,039pixels @ 300 dpi
Dimensions in every unit
| Unit | Width x height |
|---|---|
| Millimetres | 62 x 88 mm |
| Centimetres | 6.2 x 8.8 cm |
| Inches (decimal) | 2.441 x 3.465 in |
| Inches (fraction) | 2 7/16 x 3 7/16 in |
| Points (1/72 in) | 175.7 x 249.4 pt |
| Picas | 14.65 x 20.79 pc |
Pixel dimensions by resolution
| Resolution | Pixels | Megapixels |
|---|---|---|
| 72 dpi | 176 x 249 px | 0 MP |
| 96 dpi | 234 x 333 px | 0.1 MP |
| 150 dpi | 366 x 520 px | 0.2 MP |
| 200 dpi | 488 x 693 px | 0.3 MP |
| 300 dpi | 732 x 1,039 px | 0.8 MP |
| 600 dpi | 1,465 x 2,079 px | 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) | 68 x 94 mm | 2.677 x 3.701 in |
| 0.125 in bleed (each side) | 68.4 x 94.4 mm | 2.691 x 3.715 in |
How many B8 fit on a press sheet
| Sheet | Without bleed | With 3 mm bleed |
|---|---|---|
| A4 | 9-up | 9-up |
| A3 | 18-up | 18-up |
| SRA3 | 25-up | 18-up |
| Letter | 9-up | 8-up |
| Tabloid 11 x 17 in | 18-up | 16-up |
| 12 x 18 in | 21-up | 18-up |
| 13 x 19 in (Super B) | 25-up | 21-up |
| B2 (offset) | 64-up | 50-up |
| B1 (offset) | 128-up | 100-up |
Simple grid imposition with no gutters or gripper margin; real layouts may fit fewer.
Envelopes for B8
| Fold | Folded size | Envelopes that fit |
|---|---|---|
| Unfolded | 62 x 88 mm | C7 envelope, C7/C6 envelope |
| Folded in half | 44 x 62 mm | C8 envelope, C7 envelope |
| Folded in thirds | 29.3 x 62 mm | C8 envelope |
The √2 system
B8 has an aspect ratio of 1 : 1.4194 — 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 B8?
B8 is 62 x 88 mm, which is 2.44 x 3.46 in (2 7/16 x 3 7/16 in).
How many pixels is B8 at 300 DPI?
732 x 1,039 pixels at 300 dpi, or 366 x 520 at 150 dpi.
Sources & data
- Dimensions per the relevant standard; see sources.