B1 vs B4
| B1 | B4 | |
|---|---|---|
| Millimetres | 707 × 1000 | 250 × 353 |
| Inches | 27.83 × 39.37 | 9.84 × 13.9 |
| Centimetres | 70.7 × 100 | 25 × 35.3 |
| Aspect ratio | 1:1.41 | 1:1.41 |
| Area | 7070 cm² | 882.5 cm² |
Which is bigger
B1 is 8 times the area of B4. They are 3 steps apart in the B series and each step halves the sheet, so the multiple is two to the power of 3. The number in the name going up while the sheet goes down is why this has to be asked rather than read off.
B1 is 457 mm wider than B4. B1 is 647 mm taller.
Printing one on the other
A B4 page fits inside B1 whole — print it at 100% and you get a 228.5 mm border down each side and 323.5 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| B1 artwork on B4 paper | 35.3% | 0.4 × 0 mm margin |
| B4 artwork on B1 paper | 282.8% | 0 × 1.7 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
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 B1 and B4?
B1 is 707 × 1000 mm and B4 is 250 × 353 mm. B1 is the larger of the two by 701.1% in area.
Can I print B1 on B4?
Not at full size. Scale it to 35.3% and it fits inside B4 with 0.4 × 0 mm to spare.
Which is bigger, B1 or B4?
B1 — 707 × 1000 mm against 250 × 353 mm, which is 701.1% more area.
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B1 in full · B4 in full · All size comparisons · All paper sizes