Super A3 vs JIS B3
| Super A3 | JIS B3 | |
|---|---|---|
| Millimetres | 329 × 483 | 364 × 515 |
| Inches | 12.95 × 19.02 | 14.33 × 20.28 |
| Centimetres | 32.9 × 48.3 | 36.4 × 51.5 |
| Aspect ratio | 1:1.47 | 1:1.41 |
| Area | 1589.1 cm² | 1874.6 cm² |
Which is bigger
JIS B3, by 18% in area. JIS B3 is 35 mm wider than Super A3. JIS B3 is 32 mm taller.
Printing one on the other
A Super A3 page fits inside JIS B3 whole — print it at 100% and you get a 17.5 mm border down each side and 16 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| Super A3 artwork on JIS B3 paper | 106.6% | 13.2 × 0 mm margin |
| JIS B3 artwork on Super A3 paper | 90.4% | 0 × 17.5 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
The proportions differ: Super A3 is 1:1.47 and JIS B3 is 1:1.41. That difference is why a layout moved between them never quite lines up — scale it to fit one edge and the other is left with 13.2 mm of unwanted margin.
Frequently asked questions
What is the difference between Super A3 and JIS B3?
Super A3 is 329 × 483 mm and JIS B3 is 364 × 515 mm. JIS B3 is the larger of the two by 18% in area.
Can I print Super A3 on JIS B3?
Yes, at 100% — Super A3 is smaller on both edges, so it lands inside JIS B3 with a border all round.
Which is bigger, Super A3 or JIS B3?
JIS B3 — 364 × 515 mm against 329 × 483 mm, which is 18% more area.
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Super A3 in full · JIS B3 in full · All size comparisons · All paper sizes