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The international paper size standard, ISO 216, is based on the German DIN 476 standard for
paper sizes. Using the metric system, the base format is a sheet of paper measuring 1 m² in
area (A0 paper size). Successive paper sizes in the series A1, A2, A3, etc., are defined by
halving the preceding paper size parallel to its shorter side. The most frequently used
paper size is A4 (210 × 297 mm).
ISO paper sizes (plus rounded inch values)
| Format |
A series |
B series |
C series |
| Size |
mm × mm |
in × in |
mm × mm |
in × in |
mm × mm |
in × in |
| -0 |
841 × 1189 |
33.1 × 46.8 |
1000 × 1414 |
39.4 × 55.7 |
917 × 1297 |
36.1 × 51.1 |
| -1 |
594 × 841 |
23.4 × 33.1 |
707 × 1000 |
27.8 × 39.4 |
648 × 917 |
25.5 × 36.1 |
| -2 |
420 × 594 |
16.5 × 23.4 |
500 × 707 |
19.7 × 27.8 |
458 × 648 |
18.0 × 25.5 |
| -3 |
297 × 420 |
11.7 × 16.5 |
353 × 500 |
13.9 × 19.7 |
324 × 458 |
12.8 × 18.0 |
| -4 |
210 × 297 |
8.3 × 11.7 |
250 × 353 |
9.8 × 13.9 |
229 × 324 |
9.0 × 12.8 |
| -5 |
148 × 210 |
5.8 × 8.3 |
176 × 250 |
6.9 × 9.8 |
162 × 229 |
6.4 × 9.0 |
| -6 |
105 × 148 |
4.1 × 5.8 |
125 × 176 |
4.9 × 6.9 |
114 × 162 |
4.5 × 6.4 |
| -7 |
74 × 105 |
2.9 × 4.1 |
88 × 125 |
3.5 × 4.9 |
81 × 114 |
3.2 × 4.5 |
| -8 |
52 × 74 |
2.0 × 2.9 |
62 × 88 |
2.4 × 3.5 |
57 × 81 |
2.2 × 3.2 |
| -9 |
37 × 52 |
1.5 × 2.0 |
44 × 62 |
1.7 × 2.4 |
40 × 57 |
1.6 × 2.2 |
| -10 |
26 × 37 |
1.0 × 1.5 |
31 × 44 |
1.2 × 1.7 |
28 × 40 |
1.1 × 1.6 |
Source : Wikipedia
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