Paper size - Wikipedia, the free encyclopedia
The base A0 size of paper is defined as having an area of 1 m 2. Rounded to the nearest millimetre, the A0 paper size is 841 by 1,189 millimetres (33.1 in × 46.8 in). Successive paper sizes in the series A1, A2, A3, and so forth, are defined by halving th...