A7 Envelope (US) vs JIS B6
| A7 Envelope (US) | JIS B6 | |
|---|---|---|
| Millimetres | 133.35 × 184.15 | 128 × 182 |
| Inches | 5.25 × 7.25 | 5.04 × 7.17 |
| Centimetres | 13.3 × 18.4 | 12.8 × 18.2 |
| Aspect ratio | 1:1.38 | 1:1.42 |
| Area | 245.6 cm² | 233 cm² |
Which is bigger
A7 Envelope (US), by 5.4% in area. A7 Envelope (US) is 5.3 mm wider than JIS B6. A7 Envelope (US) is 2.2 mm taller.
Printing one on the other
A JIS B6 page fits inside A7 Envelope (US) whole — print it at 100% and you get a 2.7 mm border down each side and 1.1 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| A7 Envelope (US) artwork on JIS B6 paper | 96% | 0 × 5.2 mm margin |
| JIS B6 artwork on A7 Envelope (US) paper | 101.2% | 3.8 × 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: A7 Envelope (US) is 1:1.38 and JIS B6 is 1:1.42. 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 5.2 mm of unwanted margin.
Frequently asked questions
What is the difference between A7 Envelope (US) and JIS B6?
A7 Envelope (US) is 133.35 × 184.15 mm and JIS B6 is 128 × 182 mm. A7 Envelope (US) is the larger of the two by 5.4% in area.
Can I print A7 Envelope (US) on JIS B6?
Not at full size. Scale it to 96% and it fits inside JIS B6 with 0 × 5.2 mm to spare.
Which is bigger, A7 Envelope (US) or JIS B6?
A7 Envelope (US) — 133.35 × 184.15 mm against 128 × 182 mm, which is 5.4% more area.
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A7 Envelope (US) in full · JIS B6 in full · All size comparisons · All paper sizes