A0 Paper Size, Dimensions and Format (A series)

A0 in millimetres

841 x 1189 mm




Aspect ratio 1:1.41
Area (A) 999,949 mm²
Perimeter (P) 4,060 mm
Diagonal (d) 1,456.37 mm


The A0 format measures 841 x 1189 mm or inches. An A0 paper fromat has an aspect ratio of 1:1.41. The Area of the A0 paper size is 999,949 mm² or 1,549.08 in² with a perimeter of 4,060 mm or 159.80 in. An A0 format has a diagonal length of 1,456.37 mm or 57.32 in. The A0 size belongs to the A series. In the A series there are a total of 19 paper sizes.

Other A Paper Sizes

There are a total of 19 A Paper Sizes.