C3 vs C4
C3 is the larger of the two at the same 1 : √2 shape, one halving apart, so one scales onto the other with nothing cropped: 141% up, 71% down.
Compare a Different Pair
C3 and C4, Side by Side
| C3 | C4 | Difference | |
|---|---|---|---|
| Millimetres | 324 × 458 | 229 × 324 | 95 × 134 mm |
| Inches | 12.76 × 18.03 | 9.02 × 12.76 | 3.74 × 5.28 in |
| Centimetres | 32.4 × 45.8 | 22.9 × 32.4 | |
| Area | 0.148 m², 148,392 mm² | 0.0742 m², 74,196 mm² | 2× |
| Aspect ratio | 1 : 1.414 (√2) | 1 : 1.415 (√2) | same |
What Is Lost Printing One on the Other
At 100% scale, both centred, nothing resized. A positive figure on the wider or taller side is cropped; on the other it is a blank margin.
| Axis | Gap | C3 onto C4 | C4 onto C3 |
|---|---|---|---|
| Width | 47.5 mm (1.87 in) each side | C3 loses it | blank band |
| Height | 67 mm (2.64 in) each end | C3 loses it | blank band |
Scale-to-Fit Percentages
The figure to type into a printer or PDF dialog to scale one to fit inside the other:
| C4 to fit C3 | 141% | fills the sheet, nothing cropped |
|---|---|---|
| C3 to fit C4 | 71% | fills the sheet, nothing cropped |
Both are one halving apart on the 1 : √2 series, so these are the copier presets and nothing is distorted or lost.
Frequently Asked Questions
Is C3 bigger than C4?
C3 is bigger. It is 324 × 458 mm against 229 × 324 mm for C4, about 2 times the area.
What is the difference between C3 and C4?
C3 is the larger of the two at the same 1 : √2 shape, one halving apart, so one scales onto the other with nothing cropped: 141% up, 71% down.
Can you print C4 on C3?
Yes, cleanly. Set the printer to scale C4 to 141% and it fills C3 edge to edge with nothing lost.
✓ Dimensions per the standards on the C3 and C4 pages. Differences and scale factors computed. Reviewed . Editorial Process →