B7 vs B9
| B7 | B9 | |
|---|---|---|
| Millimetres | 88 × 125 | 44 × 62 |
| Inches | 3.46 × 4.92 | 1.73 × 2.44 |
| Centimetres | 8.8 × 12.5 | 4.4 × 6.2 |
| Aspect ratio | 1:1.42 | 1:1.41 |
| Area | 110 cm² | 27.3 cm² |
Which is bigger
B7 is 4 times the area of B9. They are 2 steps apart in the B series and each step halves the sheet, so the multiple is two to the power of 2. The number in the name going up while the sheet goes down is why this has to be asked rather than read off.
B7 is 44 mm wider than B9. B7 is 63 mm taller.
Printing one on the other
A B9 page fits inside B7 whole — print it at 100% and you get a 22 mm border down each side and 31.5 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| B7 artwork on B9 paper | 49.6% | 0.4 × 0 mm margin |
| B9 artwork on B7 paper | 200% | 0 × 1 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: B7 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 B7 and B9?
B7 is 88 × 125 mm and B9 is 44 × 62 mm. B7 is the larger of the two by 303.2% in area.
Can I print B7 on B9?
Not at full size. Scale it to 49.6% and it fits inside B9 with 0.4 × 0 mm to spare.
Which is bigger, B7 or B9?
B7 — 88 × 125 mm against 44 × 62 mm, which is 303.2% more area.
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B7 in full · B9 in full · All size comparisons · All paper sizes