Paper size · ISO A
A1 size
A1 Size: 594 × 841 mm, with inch and cm dimensions. Check proportions and common uses. Find the largest square for a paper craft.
594 × 841 mm23.3858 × 33.1102 inRatio 594:841 (1:1.416)
- Millimetres
- 594 × 841 mm
- Centimetres
- 59.4 × 84.1 cm
- Inches · rounded to 4 decimals
- 23.3858 × 33.1102 in
- Aspect ratio · width:height
- 594:841 (1:1.416)
Common uses
Use A1 for presentation drawings, large diagrams and posters viewed from a short distance.
How it compares
Two A1 sheets placed side by side make approximately one A0 sheet. Cut A1 across the middle of its long edge to get two A2 sheets. Whole-millimetre rounding can leave a 1 mm difference at a cut edge.
Cut a square for origami
The largest square from a flat rectangle this size is 594 × 594 mm (23.3858 × 23.3858 in). Fold one short edge against a long edge so their corners meet. Crease the diagonal, cut off the extra 247 mm strip, then open the triangle.
Try the beginner origami dog with your square, or see how to prepare square paper.