B4 Paper Size
B4 paper size measures 250 × 353 mm. The Dimensions of B4 Paper are 9.84 by 13.9 inches, 25.0 by 35.3 centimetres, 2953 by 4169 pixels at 300 DPI, and 709 by 1001 points. It is half of B3. Its most common use is large-format books.
B4 measures 250 millimetres wide and 353 millimetres tall.
Dimensions of B4 Paper
| Unit | Width | Height | Width × height | Copy |
|---|---|---|---|---|
| Millimetres (mm) | 250 | 353 | 250 × 353 mm | |
| Centimetres (cm) | 25.0 | 35.3 | 25.0 × 35.3 cm | |
| Metres (m) | 0.25 | 0.353 | 0.25 × 0.353 m | |
| Inches (in) | 9.84 | 13.9 | 9.84 × 13.9 in | |
| Feet (ft) | 0.82 | 1.16 | 0.82 × 1.16 ft | |
| Points (pt) | 709 | 1001 | 709 × 1001 pt | |
| Picas (pc) | 59.1 | 83.4 | 59.1 × 83.4 pc | |
| Pixels at 72 DPI | 709 | 1001 | 709 × 1001 px | |
| Pixels at 150 DPI | 1476 | 2085 | 1476 × 2085 px | |
| Pixels at 300 DPI | 2953 | 4169 | 2953 × 4169 px | |
| Pixels at 600 DPI | 5906 | 8339 | 5906 × 8339 px |
Pixel counts follow from the resolution: pixels = millimetres ÷ 25.4 × DPI. More on the DPI and pixels page.
B4 Paper Format
B4 is half of B3 and folds in half to B5. One B4 sheet tiles into 2 × B5, 4 × B6, 8 × B7. Put B4 next to another size in the comparison tool.
B4 Size in Millimeters (mm)
B4 is 250 × 353 mm (250 mm wide, 353 mm tall). Millimetres are the base unit of ISO 216, so these are the exact figures paper mills and print shops cut to. Page-setup dialogs outside the US expect ISO B-series sizes entered in mm.
B4 Size in Centimeters (cm)
B4 is 25.0 × 35.3 cm. Centimetres are the handy unit for checking a sheet against a school ruler or giving a rough size; the figure is the millimetre value divided by ten.
B4 Size in Inches
B4 is 9.84 × 13.9 inches. Inches come up when B4 is opened in US-configured software or lined up against the nearest A size. One inch is fixed at 25.4 mm.
B4 Size in Pixels
At 300 DPI B4 is 2953 × 4169 px; at 72 DPI it is 709 × 1001 px. Pixel dimensions are what you type into the new-document box in Photoshop, GIMP or Figma, and they scale with the DPI you choose.
B4 in Pixels at 72 DPI (Screen)
B4 is 709 × 1001 px at 72 DPI. This is the legacy screen resolution, used for on-screen mockups, web previews and wireframes where physical print size is not the point.
B4 in Pixels at 300 DPI (Print)
B4 is 2953 × 4169 px at 300 DPI. 300 DPI is the print-quality benchmark, so set an B4 canvas to this pixel count for anything going to a commercial or a good home printer.
B4 Size in Points (pt)
B4 is 709 × 1001 points. Points are the unit of PDF, InDesign and LaTeX page geometry, where 72 points make one inch. A page set to 709 by 1001 pt exports as B4.
B4 Shape and Area
| Aspect ratio | 1 : 1.412 (√2) |
|---|---|
| Area | 0.0882 m² · 88,250 mm² |
| Diagonal | 432.6 mm · 17.03 in |
| ISO 216 tolerance | ± 2 mm each side |
| Governing standard | ISO 216:2007 |
Frequently Asked Questions
What is B4 Paper Size?
A piece of B4 paper measures 250 × 353 mm (9.84 × 13.9 in). It is one of the ISO 216 B-series sizes, made by folding B3 in half, and it folds again to make B5.
What are the Uses of B4 Paper?
B4 is used for atlases and art books, b4 envelopes, manga and comics.
How long is a piece of B4 paper?
B4 is 353 mm long on the longer edge and 250 mm on the shorter edge, which is 35.3 cm by 25.0 cm.
How long is B4 paper in inches?
The long edge of B4 is 13.9 inches and the short edge is 9.84 inches.
How long is a piece of B4 paper in cm?
B4 is 35.3 cm long by 25.0 cm wide.
B Paper Sizes
✓ Dimensions per ISO 216:2007; unit values derived by formula. Reviewed . Editorial Process →