in
cm
mm
A4
11.75 x 8.25
21 x 30
210 x 297
A3
16.5 x 11.75
30 x 42
297 x 420
A2
23.5 x 16.5
42 x 60
420 x 594
A1
33 x 23.5
60 x 84
594 x 841
A0
44 x 33
84 x 119
841 x 1189

A Size Measurements