Japanese JIS B series
JIS B10 paper size
JIS B10 measures 32 x 45 mm (1.26 x 1.77 in). Part of the Japanese JIS B series.
32 x 45millimetres
1.26 x 1.77inches
378 x 531pixels @ 300 dpi
Dimensions in every unit
| Unit | Width x height |
|---|---|
| Millimetres | 32 x 45 mm |
| Centimetres | 3.2 x 4.5 cm |
| Inches (decimal) | 1.26 x 1.772 in |
| Inches (fraction) | 1 1/4 x 1 3/4 in |
| Points (1/72 in) | 90.7 x 127.6 pt |
| Picas | 7.56 x 10.63 pc |
Pixel dimensions by resolution
| Resolution | Pixels | Megapixels |
|---|---|---|
| 72 dpi | 91 x 128 px | 0 MP |
| 96 dpi | 121 x 170 px | 0 MP |
| 150 dpi | 189 x 266 px | 0.1 MP |
| 200 dpi | 252 x 354 px | 0.1 MP |
| 300 dpi | 378 x 531 px | 0.2 MP |
| 600 dpi | 756 x 1,063 px | 0.8 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) | 38 x 51 mm | 1.496 x 2.008 in |
| 0.125 in bleed (each side) | 38.4 x 51.4 mm | 1.51 x 2.022 in |
How many JIS B10 fit on a press sheet
| Sheet | Without bleed | With 3 mm bleed |
|---|---|---|
| A4 | 36-up | 28-up |
| A3 | 81-up | 56-up |
| SRA3 | 100-up | 66-up |
| Letter | 36-up | 28-up |
| Tabloid 11 x 17 in | 78-up | 56-up |
| 12 x 18 in | 90-up | 64-up |
| 13 x 19 in (Super B) | 105-up | 72-up |
| B2 (offset) | 242-up | 169-up |
Simple grid imposition with no gutters or gripper margin; real layouts may fit fewer.
Envelopes for JIS B10
| Fold | Folded size | Envelopes that fit |
|---|---|---|
| Unfolded | 32 x 45 mm | C9 envelope, C8 envelope |
| Folded in half | 22.5 x 32 mm | C10 envelope, C9 envelope, C8 envelope |
| Folded in thirds | 15 x 32 mm | C10 envelope, C9 envelope, C8 envelope |
The √2 system
JIS B10 has an aspect ratio of 1 : 1.4063 — 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 JIS B10?
JIS B10 is 32 x 45 mm, which is 1.26 x 1.77 in (1 1/4 x 1 3/4 in).
How many pixels is JIS B10 at 300 DPI?
378 x 531 pixels at 300 dpi, or 189 x 266 at 150 dpi.
Sources & data
- Dimensions per the relevant standard; see sources.