ARCH C vs JIS B2
| ARCH C | JIS B2 | |
|---|---|---|
| Millimetres | 457.2 × 609.6 | 515 × 728 |
| Inches | 18 × 24 | 20.28 × 28.66 |
| Centimetres | 45.7 × 61 | 51.5 × 72.8 |
| Aspect ratio | 1:1.33 | 1:1.41 |
| Area | 2787.1 cm² | 3749.2 cm² |
Which is bigger
JIS B2, by 34.5% in area. JIS B2 is 57.8 mm wider than ARCH C. JIS B2 is 118.4 mm taller.
Printing one on the other
A ARCH C page fits inside JIS B2 whole — print it at 100% and you get a 28.9 mm border down each side and 59.2 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| ARCH C artwork on JIS B2 paper | 112.6% | 0 × 41.3 mm margin |
| JIS B2 artwork on ARCH C paper | 83.7% | 26 × 0 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: ARCH C is 1:1.33 and JIS B2 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 41.3 mm of unwanted margin.
Frequently asked questions
What is the difference between ARCH C and JIS B2?
ARCH C is 457.2 × 609.6 mm and JIS B2 is 515 × 728 mm. JIS B2 is the larger of the two by 34.5% in area.
Can I print ARCH C on JIS B2?
Yes, at 100% — ARCH C is smaller on both edges, so it lands inside JIS B2 with a border all round.
Which is bigger, ARCH C or JIS B2?
JIS B2 — 515 × 728 mm against 457.2 × 609.6 mm, which is 34.5% more area.
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ARCH C in full · JIS B2 in full · All size comparisons · All paper sizes