B3 vs B4
B3 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
B3 and B4, Side by Side
| B3 | B4 | Difference | |
|---|---|---|---|
| Millimetres | 353 × 500 | 250 × 353 | 103 × 147 mm |
| Inches | 13.9 × 19.69 | 9.84 × 13.9 | 4.06 × 5.79 in |
| Centimetres | 35.3 × 50.0 | 25.0 × 35.3 | |
| Area | 0.176 m², 176,500 mm² | 0.0882 m², 88,250 mm² | 2× |
| Aspect ratio | 1 : 1.416 (√2) | 1 : 1.412 (√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 | B3 onto B4 | B4 onto B3 |
|---|---|---|---|
| Width | 51.5 mm (2.03 in) each side | B3 loses it | blank band |
| Height | 73.5 mm (2.89 in) each end | B3 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:
| B4 to fit B3 | 141% | fills the sheet, nothing cropped |
|---|---|---|
| B3 to fit B4 | 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 B3 bigger than B4?
B3 is bigger. It is 353 × 500 mm against 250 × 353 mm for B4, about 2 times the area.
What is the difference between B3 and B4?
B3 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 B4 on B3?
Yes, cleanly. Set the printer to scale B4 to 141% and it fills B3 edge to edge with nothing lost.
✓ Dimensions per the standards on the B3 and B4 pages. Differences and scale factors computed. Reviewed . Editorial Process →