JIS B7 vs A2 Envelope (US)

Q: Which is bigger, JIS B7 or A2 Envelope (US)?

A2 Envelope (US) — 111.125 × 146.05 mm against 91 × 128 mm, which is 39.3% more area.

	JIS B7	A2 Envelope (US)
Millimetres	91 × 128	111.125 × 146.05
Inches	3.58 × 5.04	4.38 × 5.75
Centimetres	9.1 × 12.8	11.1 × 14.6
Aspect ratio	1:1.41	1:1.31
Area	116.5 cm²	162.3 cm²

Which is bigger

A2 Envelope (US), by 39.3% in area. A2 Envelope (US) is 20.1 mm wider than JIS B7. A2 Envelope (US) is 18.1 mm taller.

Printing one on the other

A JIS B7 page fits inside A2 Envelope (US) whole — print it at 100% and you get a 10.1 mm border down each side and 9 mm top and bottom.

You want	Set the print scale to	Leaves
JIS B7 artwork on A2 Envelope (US) paper	114.1%	7.3 × 0 mm margin
A2 Envelope (US) artwork on JIS B7 paper	81.9%	0 × 8.4 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 B7 is 1:1.41 and A2 Envelope (US) is 1:1.31. 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 7.3 mm of unwanted margin.

Frequently asked questions

What is the difference between JIS B7 and A2 Envelope (US)?

JIS B7 is 91 × 128 mm and A2 Envelope (US) is 111.125 × 146.05 mm. A2 Envelope (US) is the larger of the two by 39.3% in area.

Can I print JIS B7 on A2 Envelope (US)?

Yes, at 100% — JIS B7 is smaller on both edges, so it lands inside A2 Envelope (US) with a border all round.

Which is bigger, JIS B7 or A2 Envelope (US)?

A2 Envelope (US) — 111.125 × 146.05 mm against 91 × 128 mm, which is 39.3% more area.

Related comparisons

JIS B7 in full · A2 Envelope (US) in full · All size comparisons · All paper sizes