ISO B series
B7 paper size
B7 measures 88 x 125 mm (3.46 x 4.92 in). Passports (ID-3 is 125 x 88 mm, ISO B7).
88 x 125millimetres
3.46 x 4.92inches
1,039 x 1,476pixels @ 300 dpi
Dimensions in every unit
| Unit | Width x height |
|---|---|
| Millimetres | 88 x 125 mm |
| Centimetres | 8.8 x 12.5 cm |
| Inches (decimal) | 3.465 x 4.921 in |
| Inches (fraction) | 3 7/16 x 4 15/16 in |
| Points (1/72 in) | 249.4 x 354.3 pt |
| Picas | 20.79 x 29.53 pc |
Pixel dimensions by resolution
| Resolution | Pixels | Megapixels |
|---|---|---|
| 72 dpi | 249 x 354 px | 0.1 MP |
| 96 dpi | 333 x 472 px | 0.2 MP |
| 150 dpi | 520 x 738 px | 0.4 MP |
| 200 dpi | 693 x 984 px | 0.7 MP |
| 300 dpi | 1,039 x 1,476 px | 1.5 MP |
| 600 dpi | 2,079 x 2,953 px | 6.1 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) | 94 x 131 mm | 3.701 x 5.157 in |
| 0.125 in bleed (each side) | 94.4 x 131.4 mm | 3.715 x 5.171 in |
How many B7 fit on a press sheet
| Sheet | Without bleed | With 3 mm bleed |
|---|---|---|
| A4 | 4-up | 4-up |
| A3 | 9-up | 9-up |
| SRA3 | 10-up | 9-up |
| Letter | 4-up | 4-up |
| Tabloid 11 x 17 in | 9-up | 8-up |
| 12 x 18 in | 10-up | 9-up |
| 13 x 19 in (Super B) | 10-up | 10-up |
| B2 (offset) | 32-up | 25-up |
| B1 (offset) | 64-up | 50-up |
Simple grid imposition with no gutters or gripper margin; real layouts may fit fewer.
Envelopes for B7
| Fold | Folded size | Envelopes that fit |
|---|---|---|
| Unfolded | 88 x 125 mm | #6¾ envelope, A2 envelope, C6 envelope |
| Folded in half | 62.5 x 88 mm | C7 envelope, C7/C6 envelope |
| Folded in thirds | 41.7 x 88 mm | C7 envelope |
The √2 system
B7 has an aspect ratio of 1 : 1.4205 — 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 B7?
B7 is 88 x 125 mm, which is 3.46 x 4.92 in (3 7/16 x 4 15/16 in).
How many pixels is B7 at 300 DPI?
1,039 x 1,476 pixels at 300 dpi, or 520 x 738 at 150 dpi.
Sources & data
- Dimensions per the relevant standard; see sources.