B4 Paper Size
B4 paper measures 250 × 353 mm (9.84 × 13.90 in).
| Millimetres | 250 × 353 mm |
|---|---|
| Centimetres | 25 × 35.3 cm |
| Inches | 9.84 × 13.90 in |
| Aspect ratio (long ÷ short) | 1.412 |
| Series | ISO 216 B series (sizes between the A sizes) |
| Compare | A4 is 210 × 297 mm |
| Resolution | Width × height | Typical use |
|---|---|---|
| 72 PPI | 709 × 1001 px | Screen design (PDF points) |
| 96 PPI | 945 × 1334 px | Web / CSS pixels |
| 150 PPI | 1476 × 2085 px | Draft print quality |
| 300 PPI | 2953 × 4169 px | High-quality print |
| Paper weight | One sheet | 500 sheets (one ream) |
|---|---|---|
| 70 gsm | 6.18 g | 3.09 kg |
| 80 gsm | 7.06 g | 3.53 kg |
| 90 gsm | 7.94 g | 3.97 kg |
| 100 gsm | 8.82 g | 4.41 kg |
| 120 gsm | 10.59 g | 5.29 kg |
| 160 gsm | 14.12 g | 7.06 kg |
| Print onto | Scale |
|---|---|
| A5 paper | 59.2% |
| A4 paper | 84.0% |
| A3 paper | 118.8% |
| Letter paper | 79.2% |
| Legal paper | 86.4% |
Where you will see B4
B4 is used for large notebooks, folders and drawings. It is larger than A4 but smaller than A3.
About B4
B4 belongs to the ISO 216 B series. Each B size sits between two A sizes: B4 is larger than A4 and smaller than A3. The Japanese JIS B series uses different dimensions from ISO B, so check which standard a "B" size refers to.
Frequently asked questions
What are the dimensions of B4 paper?
B4 paper is 250 × 353 mm (9.84 × 13.90 inches).
Is B4 bigger than A4?
Yes. B4 (250 × 353 mm) is larger than A4 (210 × 297 mm).
Related
- B3 Paper Size353 × 500 mm
- B5 Paper Size176 × 250 mm
- A4 Paper Size210 × 297 mm
- How ISO Paper Sizes Work (A, B and C)Why A4 is 210 × 297 mm
Last updated: 2026-10-03