Envelope No. 10 vs JIS B6
| Envelope No. 10 | JIS B6 | |
|---|---|---|
| Millimetres | 104.775 × 241.3 | 128 × 182 |
| Inches | 4.13 × 9.5 | 5.04 × 7.17 |
| Centimetres | 10.5 × 24.1 | 12.8 × 18.2 |
| Aspect ratio | 1:2.3 | 1:1.42 |
| Area | 252.8 cm² | 233 cm² |
Which is bigger
Envelope No. 10, by 8.5% in area. JIS B6 is 23.2 mm wider than Envelope No. 10. Envelope No. 10 is 59.3 mm taller.
Printing one on the other
Neither sheet fits inside the other at full size: JIS B6 is the wider of the two while Envelope No. 10 is the taller, so each overruns the other on one edge. Whichever way you go, something has to scale or crop.
| You want | Set the print scale to | Leaves |
|---|---|---|
| Envelope No. 10 artwork on JIS B6 paper | 75.4% | 49 × 0 mm margin |
| JIS B6 artwork on Envelope No. 10 paper | 81.9% | 0 × 92.3 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: Envelope No. 10 is 1:2.3 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 49 mm of unwanted margin.
Frequently asked questions
What is the difference between Envelope No. 10 and JIS B6?
Envelope No. 10 is 104.775 × 241.3 mm and JIS B6 is 128 × 182 mm. Envelope No. 10 is the larger of the two by 8.5% in area.
Can I print Envelope No. 10 on JIS B6?
Not at full size. Scale it to 75.4% and it fits inside JIS B6 with 49 × 0 mm to spare.
Which is bigger, Envelope No. 10 or JIS B6?
Envelope No. 10 — 104.775 × 241.3 mm against 128 × 182 mm, which is 8.5% more area.
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Envelope No. 10 in full · JIS B6 in full · All size comparisons · All paper sizes