A8 Envelope (US) vs Envelope No. 12
| A8 Envelope (US) | Envelope No. 12 | |
|---|---|---|
| Millimetres | 139.7 × 206.375 | 120.65 × 279.4 |
| Inches | 5.5 × 8.13 | 4.75 × 11 |
| Centimetres | 14 × 20.6 | 12.1 × 27.9 |
| Aspect ratio | 1:1.48 | 1:2.32 |
| Area | 288.3 cm² | 337.1 cm² |
Which is bigger
Envelope No. 12, by 16.9% in area. A8 Envelope (US) is 19 mm wider than Envelope No. 12. Envelope No. 12 is 73 mm taller.
Printing one on the other
Neither sheet fits inside the other at full size: A8 Envelope (US) is the wider of the two while Envelope No. 12 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 |
|---|---|---|
| A8 Envelope (US) artwork on Envelope No. 12 paper | 86.4% | 0 × 101.2 mm margin |
| Envelope No. 12 artwork on A8 Envelope (US) paper | 73.9% | 50.6 × 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: A8 Envelope (US) is 1:1.48 and Envelope No. 12 is 1:2.32. 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 101.2 mm of unwanted margin.
Frequently asked questions
What is the difference between A8 Envelope (US) and Envelope No. 12?
A8 Envelope (US) is 139.7 × 206.375 mm and Envelope No. 12 is 120.65 × 279.4 mm. Envelope No. 12 is the larger of the two by 16.9% in area.
Can I print A8 Envelope (US) on Envelope No. 12?
Not at full size. Scale it to 86.4% and it fits inside Envelope No. 12 with 0 × 101.2 mm to spare.
Which is bigger, A8 Envelope (US) or Envelope No. 12?
Envelope No. 12 — 120.65 × 279.4 mm against 139.7 × 206.375 mm, which is 16.9% more area.
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A8 Envelope (US) in full · Envelope No. 12 in full · All size comparisons · All paper sizes