B-Series Paper Sizes Explained
The B-series is an ISO 216 standard that sits between consecutive A-series sizes. B0 is 1000 × 1414 mm, and each subsequent B size halves the previous. B-series is commonly used for books, posters, envelopes, and menus.
📊 B-Series Quick Facts:
• Largest: B0 (1000 × 1414 mm)
• Most Used: B5 (176 × 250 mm) – books
• Smallest: B10 (31 × 44 mm)
• Aspect Ratio: 1:√2 for all sizes
• Largest: B0 (1000 × 1414 mm)
• Most Used: B5 (176 × 250 mm) – books
• Smallest: B10 (31 × 44 mm)
• Aspect Ratio: 1:√2 for all sizes
📏 Complete B-Series Dimensions
| Size | Millimetres | Inches | Convert |
|---|---|---|---|
| B0 | 1000 × 1414 mm | 39.4 × 55.7 in | → B1 |
| B1 | 707 × 1000 mm | 27.8 × 39.4 in | → B2 |
| B2 | 500 × 707 mm | 19.7 × 27.8 in | → B3 |
| B3 | 353 × 500 mm | 13.9 × 19.7 in | → B4 |
| B4 | 250 × 353 mm | 9.8 × 13.9 in | → B5 |
| B5 | 176 × 250 mm | 6.9 × 9.8 in | → B6 |
| B6 | 125 × 176 mm | 4.9 × 6.9 in | → B7 |
| B7 | 88 × 125 mm | 3.5 × 4.9 in | — |
| B8 | 62 × 88 mm | 2.4 × 3.5 in | — |
| B9 | 44 × 62 mm | 1.7 × 2.4 in | — |
| B10 | 31 × 44 mm | 1.2 × 1.7 in | — |
🔁 Convert Between B-Series Sizes
B0 → B1
Half
B0 → B2
Quarter
B1 → B0
Double
B1 → B2
Half
B2 → B1
Double
B2 → B3
Half
B3 → B2
Double
B3 → B4
Half
B4 → B3
Double
B4 → B5
Half
B5 → B4
Double
B5 → B6
Half
B6 → B5
Double
B6 → B7
Half
Common Uses of B-Series Sizes
- B0, B1: Large posters, technical drawings
- B2, B3: Posters, wall charts, menus
- B4: Newspapers, larger books
- B5: Trade paperbacks, notebooks, diaries
- B6: Small books, postcards, invitations
- B7–B10: Tags, playing cards, small labels