A0 vs A1
A0 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
A0 and A1, Side by Side
| A0 | A1 | Difference | |
|---|---|---|---|
| Millimetres | 841 × 1189 | 594 × 841 | 247 × 348 mm |
| Inches | 33.11 × 46.81 | 23.39 × 33.11 | 9.72 × 13.7 in |
| Centimetres | 84.1 × 118.9 | 59.4 × 84.1 | |
| Area | 1 m², 999,949 mm² | 0.5 m², 499,554 mm² | 2× |
| Aspect ratio | 1 : 1.414 (√2) | 1 : 1.416 (√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 | A0 onto A1 | A1 onto A0 |
|---|---|---|---|
| Width | 123.5 mm (4.86 in) each side | A0 loses it | blank band |
| Height | 174 mm (6.85 in) each end | A0 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:
| A1 to fit A0 | 141% | fills the sheet, nothing cropped |
|---|---|---|
| A0 to fit A1 | 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 A0 bigger than A1?
A0 is bigger. It is 841 × 1189 mm against 594 × 841 mm for A1, about 2 times the area.
What is the difference between A0 and A1?
A0 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 A1 on A0?
Yes, cleanly. Set the printer to scale A1 to 141% and it fills A0 edge to edge with nothing lost.
✓ Dimensions per the standards on the A0 and A1 pages. Differences and scale factors computed. Reviewed . Editorial Process →