A0 vs A4
| A0 | A4 | |
|---|---|---|
| Millimetres | 841 × 1189 | 210 × 297 |
| Inches | 33.11 × 46.81 | 8.27 × 11.69 |
| Centimetres | 84.1 × 118.9 | 21 × 29.7 |
| Aspect ratio | 1:1.41 | 1:1.41 |
| Area | 9999.5 cm² | 623.7 cm² |
Which is bigger
A0 is 16 times the area of A4. They are 4 steps apart in the A 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.
A0 is 631 mm wider than A4. A0 is 892 mm taller.
Printing one on the other
A A4 page fits inside A0 whole — print it at 100% and you get a 315.5 mm border down each side and 446 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| A0 artwork on A4 paper | 25% | 0 × 0.1 mm margin |
| A4 artwork on A0 paper | 400.3% | 0.3 × 0 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 A0 and A4?
A0 is 841 × 1189 mm and A4 is 210 × 297 mm. A0 is the larger of the two by 1503.3% in area.
Can I print A0 on A4?
Not at full size. Scale it to 25% and it fits inside A4 with 0 × 0.1 mm to spare.
Which is bigger, A0 or A4?
A0 — 841 × 1189 mm against 210 × 297 mm, which is 1503.3% more area.
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A0 in full · A4 in full · All size comparisons · All paper sizes