C7 vs A1 Envelope (US)
| C7 | A1 Envelope (US) | |
|---|---|---|
| Millimetres | 81 × 114 | 92.075 × 130.175 |
| Inches | 3.19 × 4.49 | 3.63 × 5.13 |
| Centimetres | 8.1 × 11.4 | 9.2 × 13 |
| Aspect ratio | 1:1.41 | 1:1.41 |
| Area | 92.3 cm² | 119.9 cm² |
Which is bigger
A1 Envelope (US), by 29.8% in area. A1 Envelope (US) is 11.1 mm wider than C7. A1 Envelope (US) is 16.2 mm taller.
Printing one on the other
A C7 page fits inside A1 Envelope (US) whole — print it at 100% and you get a 5.5 mm border down each side and 8.1 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| C7 artwork on A1 Envelope (US) paper | 113.7% | 0 × 0.6 mm margin |
| A1 Envelope (US) artwork on C7 paper | 87.6% | 0.4 × 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
Both sheets have the same 1:1.41 proportions, so artwork scales between them without any cropping or extra margin — only the size changes.
Frequently asked questions
What is the difference between C7 and A1 Envelope (US)?
C7 is 81 × 114 mm and A1 Envelope (US) is 92.075 × 130.175 mm. A1 Envelope (US) is the larger of the two by 29.8% in area.
Can I print C7 on A1 Envelope (US)?
Yes, at 100% — C7 is smaller on both edges, so it lands inside A1 Envelope (US) with a border all round.
Which is bigger, C7 or A1 Envelope (US)?
A1 Envelope (US) — 92.075 × 130.175 mm against 81 × 114 mm, which is 29.8% more area.
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C7 in full · A1 Envelope (US) in full · All size comparisons · All paper sizes