JIS B4 paper size
257 × 364 mm
10.12 × 14.33 inches · 25.7 × 36.4 cm · aspect ratio 1:1.42
JIS B4 size is 257 × 364 mm. Those are the JIS B4 dimensions a printer works to; the same sheet in centimetres, inches, points and pixels is below.
What JIS B4 is for
JIS B4 is 257 × 364 mm. The Japanese office size between A3 and A4, widely used for newspapers inserts, manga volumes and school handouts. ISO B4 is 250 × 353 mm, so a JIS B4 sheet will not fit a tray cut for the ISO one.
JIS B4 dimensions in every unit
| Unit | Width | Height |
|---|---|---|
| Millimetres | 257 mm | 364 mm |
| Centimetres | 25.7 cm | 36.4 cm |
| Inches | 10.12 in | 14.33 in |
| Points (PostScript) | 729 pt | 1032 pt |
JIS B4 in pixels
Pixel dimensions depend entirely on the resolution you are working at — there is no single "pixel size" for a sheet of paper. Every resolution, with file sizes and canvas setup →
| Resolution | Pixels | Use |
|---|---|---|
| 72 DPI | 729 × 1032 | Screen preview only — far too coarse to print |
| 150 DPI | 1518 × 2150 | Draft printing, internal documents |
| 300 DPI | 3035 × 4299 | The standard for commercial print |
| 600 DPI | 6071 × 8598 | Fine detail, line art, archival scanning |
Setting up a print document? Use 300 DPI and add 3 mm of bleed on every edge unless your printer specifies otherwise.
How JIS B4 relates to the rest of the series
About JIS B4
JIS B4 is 257 × 364 mm, the Japanese B series size, which is not the same as ISO B4.
Other JIS B series (Japan) sizes
| Size | Millimetres | Inches |
|---|---|---|
| JIS B0 | 1030 × 1456 mm | 40.55 × 57.32 in |
| JIS B1 | 728 × 1030 mm | 28.66 × 40.55 in |
| JIS B2 | 515 × 728 mm | 20.28 × 28.66 in |
| JIS B3 | 364 × 515 mm | 14.33 × 20.28 in |
| JIS B5 | 182 × 257 mm | 7.17 × 10.12 in |
| JIS B6 | 128 × 182 mm | 5.04 × 7.17 in |
| JIS B7 | 91 × 128 mm | 3.58 × 5.04 in |
| JIS B8 | 64 × 91 mm | 2.52 × 3.58 in |
| JIS B9 | 45 × 64 mm | 1.77 × 2.52 in |
| JIS B10 | 32 × 45 mm | 1.26 × 1.77 in |
Frequently asked questions
What size is JIS B4 in mm?
257 × 364 mm.
What size is JIS B4 in inches?
10.12 × 14.33 inches.
What size is JIS B4 in pixels?
There is no single answer — it depends on resolution. At the print standard of 300 DPI it is 3035 × 4299 pixels; at 72 DPI it is only 729 × 1032.