C3 vs C7
| C3 | C7 | |
|---|---|---|
| Millimetres | 324 × 458 | 81 × 114 |
| Inches | 12.76 × 18.03 | 3.19 × 4.49 |
| Centimetres | 32.4 × 45.8 | 8.1 × 11.4 |
| Aspect ratio | 1:1.41 | 1:1.41 |
| Area | 1483.9 cm² | 92.3 cm² |
Which is bigger
C3 is 16 times the area of C7. They are 4 steps apart in the C series and each step halves the sheet, so the multiple is two to the power of 4. The number in the name going up while the sheet goes down is why this has to be asked rather than read off.
C3 is 243 mm wider than C7. C3 is 344 mm taller.
Printing one on the other
A C7 page fits inside C3 whole — print it at 100% and you get a 121.5 mm border down each side and 172 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| C3 artwork on C7 paper | 24.9% | 0.4 × 0 mm margin |
| C7 artwork on C3 paper | 400% | 0 × 2 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
Both sheets have the same 1:1.41 proportions, so artwork scales between them without any cropping or extra margin — only the size changes.
Frequently asked questions
What is the difference between C3 and C7?
C3 is 324 × 458 mm and C7 is 81 × 114 mm. C3 is the larger of the two by 1507% in area.
Can I print C3 on C7?
Not at full size. Scale it to 24.9% and it fits inside C7 with 0.4 × 0 mm to spare.
Which is bigger, C3 or C7?
C3 — 324 × 458 mm against 81 × 114 mm, which is 1507% more area.
Related comparisons
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- C7 vs JIS B7
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- A7 vs C7
- B3 vs C3
- B7 vs C7
- C4 vs C3
- C4 vs C7
- C5 vs C3
- C5 vs C7
- C6 vs C3
- C6 vs C7
C3 in full · C7 in full · All size comparisons · All paper sizes