A4 paper size (ISO 216)
A4 paper measures 210 × 297 mm (8.27 × 11.69 in). [source] The aspect ratio is 1:√2 (≈1.414), defined by ISO 216. [source]
| Property | Value |
|---|---|
| Standard | ISO 216 [source] |
| Width | 210 mm (8.27 in) [source] |
| Height | 297 mm (11.69 in) [source] |
| Aspect ratio | 1:√2 (≈1.414) |
Source: ISO 216.