Half Letter vs A8 Envelope (US)
| Half Letter | A8 Envelope (US) | |
|---|---|---|
| Millimetres | 139.7 × 215.9 | 139.7 × 206.375 |
| Inches | 5.5 × 8.5 | 5.5 × 8.13 |
| Centimetres | 14 × 21.6 | 14 × 20.6 |
| Aspect ratio | 1:1.55 | 1:1.48 |
| Area | 301.6 cm² | 288.3 cm² |
Which is bigger
Half Letter, by 4.6% in area. Both sheets are exactly 139.7 mm wide. Half Letter is 9.5 mm taller.
Printing one on the other
A A8 Envelope (US) page fits inside Half Letter whole — print it at 100% and you get a 0 mm border down each side and 4.8 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| Half Letter artwork on A8 Envelope (US) paper | 95.6% | 6.2 × 0 mm margin |
| A8 Envelope (US) artwork on Half Letter paper | 100% | 0 × 9.5 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 A8 Envelope (US) is 1:1.48. 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 6.2 mm of unwanted margin.
Frequently asked questions
What is the difference between Half Letter and A8 Envelope (US)?
Half Letter is 139.7 × 215.9 mm and A8 Envelope (US) is 139.7 × 206.375 mm. Half Letter is the larger of the two by 4.6% in area.
Can I print Half Letter on A8 Envelope (US)?
Not at full size. Scale it to 95.6% and it fits inside A8 Envelope (US) with 6.2 × 0 mm to spare.
Which is bigger, Half Letter or A8 Envelope (US)?
Half Letter — 139.7 × 215.9 mm against 139.7 × 206.375 mm, which is 4.6% more area.
Related comparisons
- JIS B6 vs A8 Envelope (US)
- A6 Envelope (US) vs A8 Envelope (US)
- A8 Envelope (US) vs A9 Envelope (US)
- A8 Envelope (US) vs A10 Envelope (US)
- A8 Envelope (US) vs Envelope No. 9
- A8 Envelope (US) vs Envelope No. 11
- A8 Envelope (US) vs Envelope No. 12
- A8 Envelope (US) vs Envelope No. 14
- A5 vs Half Letter
- A5 vs A8 Envelope (US)
- B5 vs Half Letter
- B6 vs Half Letter
Half Letter in full · A8 Envelope (US) in full · All size comparisons · All paper sizes