B4 vs ARCH A
| B4 | ARCH A | |
|---|---|---|
| Millimetres | 250 × 353 | 228.6 × 304.8 |
| Inches | 9.84 × 13.9 | 9 × 12 |
| Centimetres | 25 × 35.3 | 22.9 × 30.5 |
| Aspect ratio | 1:1.41 | 1:1.33 |
| Area | 882.5 cm² | 696.8 cm² |
Which is bigger
B4, by 26.7% in area. B4 is 21.4 mm wider than ARCH A. B4 is 48.2 mm taller.
Printing one on the other
A ARCH A page fits inside B4 whole — print it at 100% and you get a 10.7 mm border down each side and 24.1 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| B4 artwork on ARCH A paper | 86.3% | 12.7 × 0 mm margin |
| ARCH A artwork on B4 paper | 109.4% | 0 × 19.7 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: B4 is 1:1.41 and ARCH A is 1:1.33. 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 12.7 mm of unwanted margin.
Frequently asked questions
What is the difference between B4 and ARCH A?
B4 is 250 × 353 mm and ARCH A is 228.6 × 304.8 mm. B4 is the larger of the two by 26.7% in area.
Can I print B4 on ARCH A?
Not at full size. Scale it to 86.3% and it fits inside ARCH A with 12.7 × 0 mm to spare.
Which is bigger, B4 or ARCH A?
B4 — 250 × 353 mm against 228.6 × 304.8 mm, which is 26.7% more area.
B4 in full · ARCH A in full · All size comparisons · All paper sizes