A Paper Sizes
The international standard for paper sizes used worldwide, including the ubiquitous A4 format. They are based on a single aspect ratio of 1:√2 (approximately 1:1.4142).
4A0
66.22 × 93.62inches2A0
46.81 × 66.22inchesA0
33.11 × 46.81inchesA0+
35.98 × 50.87inchesA1
23.39 × 33.11inchesA1+
23.98 × 35.98inchesA2
16.54 × 23.39inchesA3
11.69 × 16.54inchesA3+
12.95 × 19.02inchesA4
8.27 × 11.69inchesA5
5.83 × 8.27inchesA6
4.13 × 5.83inchesA7
2.91 × 4.13inchesA8
2.05 × 2.91inchesA9
1.46 × 2.05inchesA10
1.02 × 1.46inchesA11
0.71 × 1.02inchesA12
0.51 × 0.71inchesA13
0.35 × 0.51inches
66.22 × 93.62inches2A0
46.81 × 66.22inchesA0
33.11 × 46.81inchesA0+
35.98 × 50.87inchesA1
23.39 × 33.11inchesA1+
23.98 × 35.98inchesA2
16.54 × 23.39inchesA3
11.69 × 16.54inchesA3+
12.95 × 19.02inchesA4
8.27 × 11.69inchesA5
5.83 × 8.27inchesA6
4.13 × 5.83inchesA7
2.91 × 4.13inchesA8
2.05 × 2.91inchesA9
1.46 × 2.05inchesA10
1.02 × 1.46inchesA11
0.71 × 1.02inchesA12
0.51 × 0.71inchesA13
0.35 × 0.51inches