A4 vs JIS B5
| A4 | JIS B5 | |
|---|---|---|
| Millimetres | 210 × 297 | 182 × 257 |
| Inches | 8.27 × 11.69 | 7.17 × 10.12 |
| Centimetres | 21 × 29.7 | 18.2 × 25.7 |
| Aspect ratio | 1:1.41 | 1:1.41 |
| Area | 623.7 cm² | 467.7 cm² |
Which is bigger
A4, by 33.3% in area. A4 is 28 mm wider than JIS B5. A4 is 40 mm taller.
Printing one on the other
A JIS B5 page fits inside A4 whole — print it at 100% and you get a 14 mm border down each side and 20 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| A4 artwork on JIS B5 paper | 86.5% | 0.3 × 0 mm margin |
| JIS B5 artwork on A4 paper | 115.4% | 0 × 0.5 mm margin |
These are the numbers for the "custom scale" box in a print dialog. "Fit to page" computes the same thing, but knowing the figure tells you in advance whether the result will look deliberate or accidental.
Why the shapes matter
Both sheets have the same 1:1.41 proportions, so artwork scales between them without any cropping or extra margin — only the size changes.
Frequently asked questions
What is the difference between A4 and JIS B5?
A4 is 210 × 297 mm and JIS B5 is 182 × 257 mm. A4 is the larger of the two by 33.3% in area.
Can I print A4 on JIS B5?
Not at full size. Scale it to 86.5% and it fits inside JIS B5 with 0.3 × 0 mm to spare.
Which is bigger, A4 or JIS B5?
A4 — 210 × 297 mm against 182 × 257 mm, which is 33.3% more area.
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A4 in full · JIS B5 in full · All size comparisons · All paper sizes