B6 vs Mass Market
| B6 | Mass Market | |
|---|---|---|
| Millimetres | 125 × 176 | 107.95 × 174.5 |
| Inches | 4.92 × 6.93 | 4.25 × 6.87 |
| Centimetres | 12.5 × 17.6 | 10.8 × 17.5 |
| Aspect ratio | 1:1.41 | 1:1.62 |
| Area | 220 cm² | 188.4 cm² |
Which is bigger
B6, by 16.8% in area. B6 is 17 mm wider than Mass Market. B6 is 1.5 mm taller.
Printing one on the other
A Mass Market page fits inside B6 whole — print it at 100% and you get a 8.5 mm border down each side and 0.8 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| B6 artwork on Mass Market paper | 86.4% | 0 × 22.5 mm margin |
| Mass Market artwork on B6 paper | 100.9% | 16.1 × 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 Mass Market is 1:1.62. 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 22.5 mm of unwanted margin.
Frequently asked questions
What is the difference between B6 and Mass Market?
B6 is 125 × 176 mm and Mass Market is 107.95 × 174.5 mm. B6 is the larger of the two by 16.8% in area.
Can I print B6 on Mass Market?
Not at full size. Scale it to 86.4% and it fits inside Mass Market with 0 × 22.5 mm to spare.
Which is bigger, B6 or Mass Market?
B6 — 125 × 176 mm against 107.95 × 174.5 mm, which is 16.8% more area.
B6 in full · Mass Market in full · All size comparisons · All paper sizes