Paper Size Conversion Chart

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Inches    ​
 Centimetres  
Millimetres 
 A Sizes  
10 x 8​
25.4 x 20.3
254 x 203
 
11 3/4 x 8 1/4
29.7 x 21.0
297 x 210
A4
12 x 10
30.5 x 25.4
305 x 254
 
14 x 11
35.6 x 27.9
356 x 279
 
16 x 12
40.6 x 30.5
406 x 305
 
16 1/2 x 11 3/4
42.0 x 29.7
420 x 297
A3
20 x 16
50.8 x 40.6
508 x 406
 
23 1/3 x 16 1/2
59.4 x 42.0
594 x 420
A2
24 x 20
61.0 x 50.8
610 x 508
 
30 x 20
76.2 x 50.8
762 x 508
 
30 x 30
76.2 x 76.2
762 x 762
 
33 x 23 1/2
84.1 x 59.4
841 x 594
A1
36 x 24
91.4 x 61.0
914 x 610
 
40 x 30
101.6 x 76.2
1016 x 762
 
47 x 33
118.9 x 84.1
1189 x 841
A0
48 x 36
121.9 x 91.4
1219 x 914
 
60 x 40
152.4 x 101.6
1524 x 1016
 
48 x 48
121.9 x 121.9
1219 x 1219
 
72 x 48
183.0 x 121.9
1830 x 1219
 
90 x48
229.0 x 121.9
2290 x 1219
 
96 x 48
244.0 x 121.9
2440 x 1219