C5 vs JIS B5

Q: Which is bigger, C5 or JIS B5?

JIS B5 — 182 × 257 mm against 162 × 229 mm, which is 26.1% more area.

	C5	JIS B5
Millimetres	162 × 229	182 × 257
Inches	6.38 × 9.02	7.17 × 10.12
Centimetres	16.2 × 22.9	18.2 × 25.7
Aspect ratio	1:1.41	1:1.41
Area	371 cm²	467.7 cm²

Which is bigger

C5 and JIS B5 carry the same number and are not the same sheet. The Japanese B series is defined by area — JIS B0 is 1.5 square metres where A0 is 1 — so a JIS B sheet is half again the area of the A sheet of the same number, and about 22% longer on each edge. The number tells you where a sheet sits in its own series and nothing about which standard it belongs to.

JIS B5, by 26.1% in area. JIS B5 is 20 mm wider than C5. JIS B5 is 28 mm taller.

Printing one on the other

A C5 page fits inside JIS B5 whole — print it at 100% and you get a 10 mm border down each side and 14 mm top and bottom.

You want	Set the print scale to	Leaves
C5 artwork on JIS B5 paper	112.2%	0.2 × 0 mm margin
JIS B5 artwork on C5 paper	89%	0 × 0.2 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 C5 and JIS B5?

C5 is 162 × 229 mm and JIS B5 is 182 × 257 mm. JIS B5 is the larger of the two by 26.1% in area.

Can I print C5 on JIS B5?

Yes, at 100% — C5 is smaller on both edges, so it lands inside JIS B5 with a border all round.

Which is bigger, C5 or JIS B5?

JIS B5 — 182 × 257 mm against 162 × 229 mm, which is 26.1% more area.

Related comparisons

C5 in full · JIS B5 in full · All size comparisons · All paper sizes