Topic summary
A4 paper
Extracted from the Wikipedia article International standard paper sizes.
A series
The most used of this series is the A4 paper size, which is 210 mm × 297 mm (8.27 in × 11.7 in) and thus almost exactly 1⁄16 square metre (0.0625 m; 96.8752 sq in) in area. For comparison, the letter paper size commonly used in North America (8+1⁄2 in × 11 in; 216 mm × 279 mm) is about 6 mm (0.24 in) wider and 18 mm (0.71 in) shorter than A4. Then, the size of A5 paper is half of A4, i.e. 148 mm × 210 mm (5.8 in × 8.3 in).