A6 Envelope (US) vs A8 Envelope (US)

Q: Which is bigger, A6 Envelope (US) or A8 Envelope (US)?

A8 Envelope (US) — 139.7 × 206.375 mm against 120.65 × 165.1 mm, which is 44.7% more area.

	A6 Envelope (US)	A8 Envelope (US)
Millimetres	120.65 × 165.1	139.7 × 206.375
Inches	4.75 × 6.5	5.5 × 8.13
Centimetres	12.1 × 16.5	14 × 20.6
Aspect ratio	1:1.37	1:1.48
Area	199.2 cm²	288.3 cm²

Which is bigger

A8 Envelope (US), by 44.7% in area. A8 Envelope (US) is 19 mm wider than A6 Envelope (US). A8 Envelope (US) is 41.3 mm taller.

Printing one on the other

A A6 Envelope (US) page fits inside A8 Envelope (US) whole — print it at 100% and you get a 9.5 mm border down each side and 20.6 mm top and bottom.

You want	Set the print scale to	Leaves
A6 Envelope (US) artwork on A8 Envelope (US) paper	115.8%	0 × 15.2 mm margin
A8 Envelope (US) artwork on A6 Envelope (US) paper	80%	8.9 × 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: A6 Envelope (US) is 1:1.37 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 15.2 mm of unwanted margin.

Frequently asked questions

What is the difference between A6 Envelope (US) and A8 Envelope (US)?

A6 Envelope (US) is 120.65 × 165.1 mm and A8 Envelope (US) is 139.7 × 206.375 mm. A8 Envelope (US) is the larger of the two by 44.7% in area.

Can I print A6 Envelope (US) on A8 Envelope (US)?

Yes, at 100% — A6 Envelope (US) is smaller on both edges, so it lands inside A8 Envelope (US) with a border all round.

Which is bigger, A6 Envelope (US) or A8 Envelope (US)?

A8 Envelope (US) — 139.7 × 206.375 mm against 120.65 × 165.1 mm, which is 44.7% more area.

Related comparisons

A6 Envelope (US) in full · A8 Envelope (US) in full · All size comparisons · All paper sizes