A8 vs B9
| A8 | B9 | |
|---|---|---|
| Millimetres | 52 × 74 | 44 × 62 |
| Inches | 2.05 × 2.91 | 1.73 × 2.44 |
| Centimetres | 5.2 × 7.4 | 4.4 × 6.2 |
| Aspect ratio | 1:1.42 | 1:1.41 |
| Area | 38.5 cm² | 27.3 cm² |
Which is bigger
A8, by 41.1% in area. A8 is 8 mm wider than B9. A8 is 12 mm taller.
Printing one on the other
A B9 page fits inside A8 whole — print it at 100% and you get a 4 mm border down each side and 6 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| A8 artwork on B9 paper | 83.8% | 0.4 × 0 mm margin |
| B9 artwork on A8 paper | 118.2% | 0 × 0.7 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 is 1:1.42 and B9 is 1:1.41. 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 0.4 mm of unwanted margin.
Frequently asked questions
What is the difference between A8 and B9?
A8 is 52 × 74 mm and B9 is 44 × 62 mm. A8 is the larger of the two by 41.1% in area.
Can I print A8 on B9?
Not at full size. Scale it to 83.8% and it fits inside B9 with 0.4 × 0 mm to spare.
Which is bigger, A8 or B9?
A8 — 52 × 74 mm against 44 × 62 mm, which is 41.1% more area.
A8 in full · B9 in full · All size comparisons · All paper sizes