B4 paper size
250 × 353 mm
9.84 × 13.9 inches · 25 × 35.3 cm · aspect ratio 1:1.41
B4 in every unit
| Unit | Width | Height |
|---|---|---|
| Millimetres | 250 mm | 353 mm |
| Centimetres | 25 cm | 35.3 cm |
| Inches | 9.84 in | 13.9 in |
| Points (PostScript) | 709 pt | 1001 pt |
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.
| Resolution | Pixels | Use |
|---|---|---|
| 72 DPI | 709 × 1001 | Screen preview only — far too coarse to print |
| 150 DPI | 1476 × 2085 | Draft printing, internal documents |
| 300 DPI | 2953 × 4169 | The standard for commercial print |
| 600 DPI | 5906 × 8339 | 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.
About B4
Slightly larger than A4. Common for books and magazines in Japan.
Other ISO B series sizes
| Size | Millimetres | Inches |
|---|---|---|
| B0 | 1000 × 1414 mm | 39.37 × 55.67 in |
| B1 | 707 × 1000 mm | 27.83 × 39.37 in |
| B2 | 500 × 707 mm | 19.69 × 27.83 in |
| B3 | 353 × 500 mm | 13.9 × 19.69 in |
| B5 | 176 × 250 mm | 6.93 × 9.84 in |
| B6 | 125 × 176 mm | 4.92 × 6.93 in |
| B7 | 88 × 125 mm | 3.46 × 4.92 in |
| B8 | 62 × 88 mm | 2.44 × 3.46 in |
Frequently asked questions
What size is B4 in mm?
250 × 353 mm.
What size is B4 in inches?
9.84 × 13.9 inches.
What size is B4 in pixels?
There is no single answer — it depends on resolution. At the print standard of 300 DPI it is 2953 × 4169 pixels; at 72 DPI it is only 709 × 1001.