B6 vs Half Letter
| B6 | Half Letter | |
|---|---|---|
| Millimetres | 125 × 176 | 139.7 × 215.9 |
| Inches | 4.92 × 6.93 | 5.5 × 8.5 |
| Centimetres | 12.5 × 17.6 | 14 × 21.6 |
| Aspect ratio | 1:1.41 | 1:1.55 |
| Area | 220 cm² | 301.6 cm² |
Which is bigger
Half Letter, by 37.1% in area. Half Letter is 14.7 mm wider than B6. Half Letter is 39.9 mm taller.
Printing one on the other
A B6 page fits inside Half Letter whole — print it at 100% and you get a 7.3 mm border down each side and 20 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| B6 artwork on Half Letter paper | 111.8% | 0 × 19.2 mm margin |
| Half Letter artwork on B6 paper | 81.5% | 11.1 × 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: B6 is 1:1.41 and Half Letter is 1:1.55. 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 19.2 mm of unwanted margin.
Frequently asked questions
What is the difference between B6 and Half Letter?
B6 is 125 × 176 mm and Half Letter is 139.7 × 215.9 mm. Half Letter is the larger of the two by 37.1% in area.
Can I print B6 on Half Letter?
Yes, at 100% — B6 is smaller on both edges, so it lands inside Half Letter with a border all round.
Which is bigger, B6 or Half Letter?
Half Letter — 139.7 × 215.9 mm against 125 × 176 mm, which is 37.1% more area.
B6 in full · Half Letter in full · All size comparisons · All paper sizes