JIS B6 vs A6 Envelope (US)

Q: Can I print JIS B6 on A6 Envelope (US)?

Not at full size. Scale it to 90.7% and it fits inside A6 Envelope (US) with 4.5 × 0 mm to spare.

Q: Which is bigger, JIS B6 or A6 Envelope (US)?

JIS B6 — 128 × 182 mm against 120.65 × 165.1 mm, which is 17% more area.

	JIS B6	A6 Envelope (US)
Millimetres	128 × 182	120.65 × 165.1
Inches	5.04 × 7.17	4.75 × 6.5
Centimetres	12.8 × 18.2	12.1 × 16.5
Aspect ratio	1:1.42	1:1.37
Area	233 cm²	199.2 cm²

Which is bigger

JIS B6, by 17% in area. JIS B6 is 7.3 mm wider than A6 Envelope (US). JIS B6 is 16.9 mm taller.

Printing one on the other

A A6 Envelope (US) page fits inside JIS B6 whole — print it at 100% and you get a 3.7 mm border down each side and 8.5 mm top and bottom.

You want	Set the print scale to	Leaves
JIS B6 artwork on A6 Envelope (US) paper	90.7%	4.5 × 0 mm margin
A6 Envelope (US) artwork on JIS B6 paper	106.1%	0 × 6.8 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: JIS B6 is 1:1.42 and A6 Envelope (US) is 1:1.37. 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 4.5 mm of unwanted margin.

Frequently asked questions

What is the difference between JIS B6 and A6 Envelope (US)?

JIS B6 is 128 × 182 mm and A6 Envelope (US) is 120.65 × 165.1 mm. JIS B6 is the larger of the two by 17% in area.

Can I print JIS B6 on A6 Envelope (US)?

Not at full size. Scale it to 90.7% and it fits inside A6 Envelope (US) with 4.5 × 0 mm to spare.

Which is bigger, JIS B6 or A6 Envelope (US)?

JIS B6 — 128 × 182 mm against 120.65 × 165.1 mm, which is 17% more area.

Related comparisons

JIS B6 in full · A6 Envelope (US) in full · All size comparisons · All paper sizes