Size

millimeters

inches

Letter (US)

215.9 x 279.4

8.5 x 11

Legal (US)

215.9 x 355.6

8.5 x 14

Ledger (US)

279.4 x 431.8

11 X 17

A0

841 x 1189

33.125 x 46.75

A1

594 x 841

23.375 x 33.125

A2

420 x 594

16.5 x 23.375

A3

297 x 420

11.75 x 16.5

A4

210 x 297

 8.25 x11.75