Toolman

ARCH C vs JIS B3

ARCH CJIS B3
Millimetres457.2 × 609.6364 × 515
Inches18 × 2414.33 × 20.28
Centimetres45.7 × 6136.4 × 51.5
Aspect ratio1:1.331:1.41
Area2787.1 cm²1874.6 cm²

Which is bigger

ARCH C, by 48.7% in area. ARCH C is 93.2 mm wider than JIS B3. ARCH C is 94.6 mm taller.

Printing one on the other

A JIS B3 page fits inside ARCH C whole — print it at 100% and you get a 46.6 mm border down each side and 47.3 mm top and bottom.

You wantSet the print scale toLeaves
ARCH C artwork on JIS B3 paper79.6%0 × 29.7 mm margin
JIS B3 artwork on ARCH C paper118.4%26.3 × 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 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 29.7 mm of unwanted margin.

Frequently asked questions

What is the difference between ARCH C and JIS B3?

ARCH C is 457.2 × 609.6 mm and JIS B3 is 364 × 515 mm. ARCH C is the larger of the two by 48.7% in area.

Can I print ARCH C on JIS B3?

Not at full size. Scale it to 79.6% and it fits inside JIS B3 with 0 × 29.7 mm to spare.

Which is bigger, ARCH C or JIS B3?

ARCH C — 457.2 × 609.6 mm against 364 × 515 mm, which is 48.7% more area.

Related comparisons

ARCH C in full · JIS B3 in full · All size comparisons · All paper sizes