We are surrounded by stationery item every day, Paper is one of them. Whichever part of the world we move we will come to see that paper size in that country is the same as our country. It is because the world is globalized and thus every country follows the same pattern of the paper making it International Paper Size. Globally the International Paper Size is the norm because the businesses are no more limited to the boundaries of a country. Let’s have a look at it.
A Series is based on AO (841×1189), which is equivalent to a square meter in area, and each smaller size A1, A2, etc., is equal to half of the predeing larger size.
| Size | Millimeters | Inches | |
| 2A | 1189*1682 | 46.81*66.22 | |
| 20 | 841*1189 | 33.11*46.81 | |
| A1 | 594*841 | 23.39*33.11 | |
| A2 | 420*594 | 16.54*23.39 | |
| A3 | 297*420 | 11.69*16.54 | |
| A4 | 210*297 | 8.27*11.69 | |
| A5 | 148*210 | 5.83*8.27 | |
| A6 | 105*148 | 4.13*5.83 | |
| A7 | 74*105 | 2.91*4.13 | |
| A8 | 52*74 | 2.05*2.91 | |
| A9 | 37*52 | 1.46*2.05 | |
| A10 | 26*37 | 1.02*1.46 | |
C series is for envelopes or folders suitable for enclosing stationery in the A sizes
| Size | Millimeters | Inches |
| C3 | 324*458 | 12.76*18.03 |
| C4 | 229*324 | 9.02*12.76 |
| C5 | 162*229 | 6.38*9.02 |
| C6 | 114*162 | 4.49*6.38 |
| C7 | 81*114 | 3.19*4.49 |
| DL | 110*220 | 4.33*8.66 |