B3 vs ARCH B
| B3 | ARCH B | |
|---|---|---|
| Millimetres | 353 × 500 | 304.8 × 457.2 |
| Inches | 13.9 × 19.69 | 12 × 18 |
| Centimetres | 35.3 × 50 | 30.5 × 45.7 |
| Aspect ratio | 1:1.42 | 1:1.5 |
| Area | 1765 cm² | 1393.5 cm² |
Which is bigger
B3, by 26.7% in area. B3 is 48.2 mm wider than ARCH B. B3 is 42.8 mm taller.
Printing one on the other
A ARCH B page fits inside B3 whole — print it at 100% and you get a 24.1 mm border down each side and 21.4 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| B3 artwork on ARCH B paper | 86.3% | 0 × 25.5 mm margin |
| ARCH B artwork on B3 paper | 109.4% | 19.7 × 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: B3 is 1:1.42 and ARCH B is 1:1.5. 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 25.5 mm of unwanted margin.
Frequently asked questions
What is the difference between B3 and ARCH B?
B3 is 353 × 500 mm and ARCH B is 304.8 × 457.2 mm. B3 is the larger of the two by 26.7% in area.
Can I print B3 on ARCH B?
Not at full size. Scale it to 86.3% and it fits inside ARCH B with 0 × 25.5 mm to spare.
Which is bigger, B3 or ARCH B?
B3 — 353 × 500 mm against 304.8 × 457.2 mm, which is 26.7% more area.
B3 in full · ARCH B in full · All size comparisons · All paper sizes