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| ISO Paper Sizes |
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The ISO standard for paper consists of three series outlined here. Each series uses a letter and number to specify exact sizes. For more detailed information regarding the ISO standard for paper sizes please refer to our related links at the bottom of the page. |
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A Series - General Printing |
| Series |
Millimeters |
Inches |
| A0 |
841 x 1189 |
33-1/8 x 46-1/4 |
| A1 |
594 x 841 |
23-3/8 x 33-1/8 |
| A2 |
420 x 594 |
16-1/2 x 23-3/8 |
| A3 |
297 x 420 |
11-3/4 x 16-1/2 |
| A4 |
210 x 297 |
8-1/4 x 11-3/4 |
| A5 |
148 x 210 |
5-7/8 x 8-1/4 |
| A6 |
105 x 148 |
4-1/8 x 5-7/8 |
| A7 |
74 x 105 |
2-7/8 x 4-1/8 |
| A8 |
52 x 74 |
2 x 2-7/8 |
| A9 |
37 x 52 |
1-1/2 x 2 |
| A10 |
26 x 37 |
1 x 1-1/2 |
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B Series - Posters & Charts |
| Series |
Millimeters |
Inches |
| B0 |
1000 x 1414 |
39-1/8 x 55-1/8 |
| B1 |
707 x 1000 |
27-7/8 x 39-1/8 |
| B2 |
500 x 707 |
19-5/8 x 27-7/8 |
| B3 |
353 x 500 |
13-7/8 x 19-5/8 |
| B4 |
250 x 353 |
9-7/8 x 13-7/8 |
| B5 |
176 x 250 |
7 x 9-7/8 |
| B6 |
125 x 176 |
5 x 7 |
| B7 |
88 x 125 |
3-1/2 x 5 |
| B8 |
62 x 88 |
2-1/2 x 3-1/2 |
| B9 |
44 x 62 |
1-3/4 x 2-1/2 |
| B10 |
31 x 44 |
1-1/4 x 1-3/4 |
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C Series - Stationery & Envelopes |
| Series |
Millimeters |
Inches |
| C0 |
917 x 1297 |
36 x 51 |
| C1 |
648 x 917 |
25-1/2 x 36 |
| C2 |
458 x 648 |
18 x 25-1/2 |
| C3 |
324 x 458 |
12-3/4 x 18 |
| C4 |
229 x 324 |
9 x 12-3/4 |
| C5 |
162 x 229 |
6-3/8 x 9 |
| C6 |
114 x 162 |
4-1/2 x 6-3/8 |
| C7 |
81 x 114 |
3-1/4 x 4-1/2 |
| C8 |
57 x 81 |
2-1/4 x 3-1/4 |
| C9 |
40 x 57 |
1-5/8 x 2-1/4 |
| C10 |
28 x 40 |
1-1/8 x 1-5/8 |
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