Half Letter vs A7 Envelope (US)
| Half Letter | A7 Envelope (US) | |
|---|---|---|
| Millimetres | 139.7 × 215.9 | 133.35 × 184.15 |
| Inches | 5.5 × 8.5 | 5.25 × 7.25 |
| Centimetres | 14 × 21.6 | 13.3 × 18.4 |
| Aspect ratio | 1:1.55 | 1:1.38 |
| Area | 301.6 cm² | 245.6 cm² |
Which is bigger
Half Letter, by 22.8% in area. Half Letter is 6.3 mm wider than A7 Envelope (US). Half Letter is 31.8 mm taller.
Printing one on the other
A A7 Envelope (US) page fits inside Half Letter whole — print it at 100% and you get a 3.2 mm border down each side and 15.9 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| Half Letter artwork on A7 Envelope (US) paper | 85.3% | 14.2 × 0 mm margin |
| A7 Envelope (US) artwork on Half Letter paper | 104.8% | 0 × 23 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: Half Letter is 1:1.55 and A7 Envelope (US) is 1:1.38. 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 14.2 mm of unwanted margin.
Frequently asked questions
What is the difference between Half Letter and A7 Envelope (US)?
Half Letter is 139.7 × 215.9 mm and A7 Envelope (US) is 133.35 × 184.15 mm. Half Letter is the larger of the two by 22.8% in area.
Can I print Half Letter on A7 Envelope (US)?
Not at full size. Scale it to 85.3% and it fits inside A7 Envelope (US) with 14.2 × 0 mm to spare.
Which is bigger, Half Letter or A7 Envelope (US)?
Half Letter — 139.7 × 215.9 mm against 133.35 × 184.15 mm, which is 22.8% more area.
Half Letter in full · A7 Envelope (US) in full · All size comparisons · All paper sizes