International Standard (ISO216) For Paper & Envelope Sizes (all countries except USA/Canada)
Paper
Code
Metric (mm)
Imperial (in)
A0
841 × 1189
33.1 × 46.8
A1
594 × 841
23.4 × 33.1
A2
420 × 594
16.5 × 23.4
A3
297 × 420
11.7 × 16.5
A4
210 × 297
8.3 × 11.7
A5
148 × 210
5.8 × 8.3
A6
105 × 148
4.1 × 5.8
A7
74 × 105
2.9 × 4.1
A8
52 × 74
2.0 × 2.9
A9
37 × 52
1.5 × 2.0
A10
26 × 37
1.0 × 1.5
Envelopes
Fits
C7/C6
81 x 162
4.5 × 6.4
A5 1/3 folded
C6
114 x 162
A6, A5 1/2 Folded
DL
110 x 220
4.3 x 8.7
A4 1/3 folded
C6/5
114 x 229
4.5 × 9.0
C5
162 x 229
6.4 × 9.0
A5, A4 1/2 folded
C4
229 x 324
9.0 × 12.8
C3
324 x 458
12.8 × 18.0
B6
125 x 176
4.9 × 6.9
C6 Envelope
B5
176 x 250
6.9 × 9.8
C5 Envelope
B4
250 x 353
9.8 × 13.9
C4 Envelope
E4
280 x 400
11 x 15.8
B4 Envelope