A0 to A1 Conversion
A1 is exactly half of A0. Folding an A0 sheet in half gives you an A1 sheet — this is the fundamental rule of the ISO 216 standard for A-series papers.
A0 (Original)
A0
841 × 1189 mm
33.1 × 46.8 in
33.1 × 46.8 in
A1 (Result)
A1
594 × 841 mm
23.4 × 33.1 in
23.4 × 33.1 in
📊 A0 vs A1 Quick Facts:
• Ratio: 2 A1 sheets = 1 A0 sheet
• Fold: A0 folded in half gives A1
• Scale Factor: 70.7% (divide by √2)
• Uses: A0 for large posters, A1 for technical drawings
• Ratio: 2 A1 sheets = 1 A0 sheet
• Fold: A0 folded in half gives A1
• Scale Factor: 70.7% (divide by √2)
• Uses: A0 for large posters, A1 for technical drawings
📏 Complete Dimensions
| Unit | A0 | A1 |
|---|---|---|
| Millimetres | 841 × 1189 mm | 594 × 841 mm |
| Centimetres | 84.1 × 118.9 cm | 59.4 × 84.1 cm |
| Inches | 33.1 × 46.8 in | 23.4 × 33.1 in |
| Pixels @ 72 DPI | 2384 × 3370 px | 1684 × 2384 px |
| Pixels @ 300 DPI | 9933 × 14043 px | 7016 × 9933 px |
| Pixels @ 600 DPI | 19866 × 28087 px | 14031 × 19866 px |
🎨 Common Uses
- A0: Large posters, technical drawings, professional displays
- A1: Technical drawings, architectural plans, medium posters
🔁 Related Conversions
- A0 to A2 – Quarter size
- A0 to A3 – Eighth size
- A1 to A2 – Half size
- A1 to A0 – Reverse (double)
- A1 to Pixels – Digital conversion
❓ Frequently Asked Questions
Is A1 half of A0? Yes — A1 is exactly half the area of A0.
How do I convert A0 to A1? Fold the A0 sheet in half, or scale down to 70.7% when printing.