C4 vs ARCH A
| C4 | ARCH A | |
|---|---|---|
| Millimetres | 229 × 324 | 228.6 × 304.8 |
| Inches | 9.02 × 12.76 | 9 × 12 |
| Centimetres | 22.9 × 32.4 | 22.9 × 30.5 |
| Aspect ratio | 1:1.41 | 1:1.33 |
| Area | 742 cm² | 696.8 cm² |
Which is bigger
C4, by 6.5% in area. C4 is 0.4 mm wider than ARCH A. C4 is 19.2 mm taller.
Printing one on the other
A ARCH A page fits inside C4 whole — print it at 100% and you get a 0.2 mm border down each side and 9.6 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| C4 artwork on ARCH A paper | 94.1% | 13.2 × 0 mm margin |
| ARCH A artwork on C4 paper | 100.2% | 0 × 18.7 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: C4 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 13.2 mm of unwanted margin.
Frequently asked questions
What is the difference between C4 and ARCH A?
C4 is 229 × 324 mm and ARCH A is 228.6 × 304.8 mm. C4 is the larger of the two by 6.5% in area.
Can I print C4 on ARCH A?
Not at full size. Scale it to 94.1% and it fits inside ARCH A with 13.2 × 0 mm to spare.
Which is bigger, C4 or ARCH A?
C4 — 229 × 324 mm against 228.6 × 304.8 mm, which is 6.5% more area.
C4 in full · ARCH A in full · All size comparisons · All paper sizes