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JIS B6 vs A2 Envelope (US)

JIS B6A2 Envelope (US)
Millimetres128 × 182111.125 × 146.05
Inches5.04 × 7.174.38 × 5.75
Centimetres12.8 × 18.211.1 × 14.6
Aspect ratio1:1.421:1.31
Area233 cm²162.3 cm²

Which is bigger

JIS B6, by 43.5% in area. JIS B6 is 16.9 mm wider than A2 Envelope (US). JIS B6 is 35.9 mm taller.

Printing one on the other

A A2 Envelope (US) page fits inside JIS B6 whole — print it at 100% and you get a 8.4 mm border down each side and 18 mm top and bottom.

You wantSet the print scale toLeaves
JIS B6 artwork on A2 Envelope (US) paper80.2%8.4 × 0 mm margin
A2 Envelope (US) artwork on JIS B6 paper115.2%0 × 13.8 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 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 8.4 mm of unwanted margin.

Frequently asked questions

What is the difference between JIS B6 and A2 Envelope (US)?

JIS B6 is 128 × 182 mm and A2 Envelope (US) is 111.125 × 146.05 mm. JIS B6 is the larger of the two by 43.5% in area.

Can I print JIS B6 on A2 Envelope (US)?

Not at full size. Scale it to 80.2% and it fits inside A2 Envelope (US) with 8.4 × 0 mm to spare.

Which is bigger, JIS B6 or A2 Envelope (US)?

JIS B6 — 128 × 182 mm against 111.125 × 146.05 mm, which is 43.5% more area.

Related comparisons

JIS B6 in full · A2 Envelope (US) in full · All size comparisons · All paper sizes