B3 Paper Size
B3 paper measures 353 × 500 mm (13.90 × 19.69 in).
| Millimetres | 353 × 500 mm |
|---|---|
| Centimetres | 35.3 × 50 cm |
| Inches | 13.90 × 19.69 in |
| Aspect ratio (long ÷ short) | 1.416 |
| Series | ISO 216 B series (sizes between the A sizes) |
| Compare | A3 is 297 × 420 mm |
| Resolution | Width × height | Typical use |
|---|---|---|
| 72 PPI | 1001 × 1417 px | Screen design (PDF points) |
| 96 PPI | 1334 × 1890 px | Web / CSS pixels |
| 150 PPI | 2085 × 2953 px | Draft print quality |
| 300 PPI | 4169 × 5906 px | High-quality print |
| Paper weight | One sheet | 500 sheets (one ream) |
|---|---|---|
| 70 gsm | 12.35 g | 6.18 kg |
| 80 gsm | 14.12 g | 7.06 kg |
| 90 gsm | 15.88 g | 7.94 kg |
| 100 gsm | 17.65 g | 8.82 kg |
| 120 gsm | 21.18 g | 10.59 kg |
| 160 gsm | 28.24 g | 14.12 kg |
| Print onto | Scale |
|---|---|
| A5 paper | 41.9% |
| A4 paper | 59.4% |
| A3 paper | 84.0% |
| Letter paper | 55.9% |
| Legal paper | 61.2% |
Where you will see B3
B3 is a mid-large size that appears in posters and drawings.
About B3
B3 belongs to the ISO 216 B series. Each B size sits between two A sizes: B3 is larger than A3 and smaller than A2. 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 B3 paper?
B3 paper is 353 × 500 mm (13.90 × 19.69 inches).
Is B3 bigger than A3?
Yes. B3 (353 × 500 mm) is larger than A3 (297 × 420 mm).
Related
- B2 Paper Size500 × 707 mm
- B4 Paper Size250 × 353 mm
- A3 Paper Size297 × 420 mm
- How ISO Paper Sizes Work (A, B and C)Why A4 is 210 × 297 mm
Last updated: 2026-10-03