B4 vs B5
B4 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
B4 and B5, Side by Side
| B4 | B5 | Difference | |
|---|---|---|---|
| Millimetres | 250 × 353 | 176 × 250 | 74 × 103 mm |
| Inches | 9.84 × 13.9 | 6.93 × 9.84 | 2.91 × 4.06 in |
| Centimetres | 25.0 × 35.3 | 17.6 × 25.0 | |
| Area | 0.0882 m², 88,250 mm² | 0.044 m², 44,000 mm² | 2.01× |
| Aspect ratio | 1 : 1.412 (√2) | 1 : 1.420 (√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 | B4 onto B5 | B5 onto B4 |
|---|---|---|---|
| Width | 37 mm (1.46 in) each side | B4 loses it | blank band |
| Height | 51.5 mm (2.03 in) each end | B4 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:
| B5 to fit B4 | 141% | fills the sheet, nothing cropped |
|---|---|---|
| B4 to fit B5 | 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 B4 bigger than B5?
B4 is bigger. It is 250 × 353 mm against 176 × 250 mm for B5, about 2.01 times the area.
What is the difference between B4 and B5?
B4 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 B5 on B4?
Yes, cleanly. Set the printer to scale B5 to 141% and it fills B4 edge to edge with nothing lost.
✓ Dimensions per the standards on the B4 and B5 pages. Differences and scale factors computed. Reviewed . Editorial Process →