The following table shows the width and height of all ISO A and B formats as well as C envelope formats. All dimensions are given in millimetres
 
a series format
b series format
c series format
4A0
1682 x 2378
2A0
1189 x 1682
A0
841 x 1189
B0
1000 x 1414
C0
917 x 1297
A1
594 x 841
B1
707 x 1000
C1
648 x 917
A2
420 x 594
B2
500 x 707
C2
458 x 648
A3
297 x 420
B3
353 x 500
C3
324 x 458
A4
210 x 297
B4
250 x 353
C4
229 x 324
A5
148 x 210
B5
176 x 250
C5
162 x229
A6
105 x 148
B6
125 x 176
C6
114 x 162
A7
74 x 105
B7
88 x 125
C7
81 x 114
A8
52 x 74
B8
62 x88
C8
57 x 81
A9
37 x 52
B9
44 x 62
C9
40 x 57
A10
26 x 37
B10
31 x 44
C10
28 x 40