ISO 216 A-Series

International standard paper sizes

A1

23^3/8 x 33^1/8 inches

A2

16^1/2 x 23^3/8 inches

A3

11^3/4 x 16^1/2 inches

A4

8^1/4 x 11^3/4 inches

A5

5^7/8 x 8^1/4 inches

A6

4^1/8 x 5^7/8 inches

A7

2^7/8 x 4^1/8 inches

A8

~2 x 2^7/8 inches

A9

1^1/2 x ~2 inches

A10

~1 x 1^1/2 inches