A5 paper size
A5 paper is 148 × 210 mm (5.83 × 8.27 in) — exactly half an A4 sheet.
148 × 210millimetres
5.83 × 8.27inches
A5 vs A4
| Size | mm | inches |
|---|---|---|
| A5 | 148 × 210 mm | 5.83 × 8.27 in |
| A4 | 210 × 297 mm | 8.27 × 11.69 in |
The A-series doubles or halves cleanly: each size up doubles the area, each down halves it, keeping the same 1:√2 shape.
Frequently asked questions
What size is A5 paper?
148 × 210 mm (5.83 × 8.27 in).
Is A5 half of A4?
Yes — fold an A4 in half and you get A5 (148 × 210 mm). That's the ISO A-series design.