A0 Paper Size
A0 paper measures 841 × 1189 mm (33.11 × 46.81 in).
| Millimetres | 841 × 1189 mm |
|---|---|
| Centimetres | 84.1 × 118.9 cm |
| Inches | 33.11 × 46.81 in |
| Aspect ratio (long ÷ short) | 1.414 |
| Next size down | A1 is half of A0 |
| Series neighbours | B0 is a little larger; C0 is the envelope that fits it |
| Area | 0.9999 m² |
| Resolution | Width × height | Typical use |
|---|---|---|
| 72 PPI | 2384 × 3370 px | Screen design (PDF points) |
| 96 PPI | 3179 × 4494 px | Web / CSS pixels |
| 150 PPI | 4967 × 7022 px | Draft print quality |
| 300 PPI | 9933 × 14043 px | High-quality print |
| Paper weight | One sheet | 500 sheets (one ream) |
|---|---|---|
| 70 gsm | 70.00 g | 35.00 kg |
| 80 gsm | 80.00 g | 40.00 kg |
| 90 gsm | 90.00 g | 45.00 kg |
| 100 gsm | 99.99 g | 50.00 kg |
| 120 gsm | 119.99 g | 60.00 kg |
| 160 gsm | 159.99 g | 80.00 kg |
| Print onto | Scale |
|---|---|
| A5 paper | 17.6% |
| A4 paper | 25.0% |
| A3 paper | 35.3% |
| Letter paper | 23.5% |
| Legal paper | 25.7% |
| Size | Sheets | Dimensions |
|---|---|---|
| A1 | 2 | 594 × 841 mm |
| A2 | 4 | 420 × 594 mm |
| A3 | 8 | 297 × 420 mm |
| A4 | 16 | 210 × 297 mm |
Where you will see A0
A0 is the largest standard A size. It is mostly seen in large technical and architectural drawings, wall posters and event displays, and is normally printed on wide-format plotters rather than office printers.
About A0
A0 belongs to the ISO 216 A series. Every A size has the same proportions (1 : √2, about 1.414), so folding or cutting a sheet across its long side gives the next size down with the same shape. Its area is 0.9999 square metres.
A0 is defined as having an area of 1 square metre. Rounded to whole millimetres (841 × 1189 mm) the area comes to 0.9999 m². All other A sizes follow from it by repeated halving.
Frequently asked questions
What are the dimensions of A0 paper?
A0 paper is 841 × 1189 mm (33.11 × 46.81 inches).
How many pixels is A0?
At 300 PPI, A0 is 9933 × 14043 pixels. At 72 PPI it is 2384 × 3370 pixels. The number depends on the resolution you choose; use the paper size converter for any PPI.
How much does a sheet of A0 paper weigh?
It depends on the paper weight. At 80 gsm a single A0 sheet weighs 80.00 g, and a ream of 500 sheets weighs 40.00 kg. See how paper weight works.
How many smaller sheets can I get from one A0?
Because each A size is half of the previous one, one A0 sheet gives you 2 × A1, 4 × A2, 8 × A3, 16 × A4.
Related
- A1 Paper Size594 × 841 mm
- B0 Paper Size1000 × 1414 mm
- C0 Envelope Size917 × 1297 mm
- How ISO Paper Sizes Work (A, B and C)Why A4 is 210 × 297 mm
Last updated: 2026-10-03