A1 Paper Size, Dimensions and Format (A series)

A1 in millimetres

594 x 841 mm




Aspect ratio 1:1.42
Area (A) 499,554 mm²
Perimeter (P) 2,870 mm
Diagonal (d) 1,029.62 mm


The A1 format measures 594 x 841 mm or inches. An A1 paper fromat has an aspect ratio of 1:1.42. The Area of the A1 paper size is 499,554 mm² or 774.54 in² with a perimeter of 2,870 mm or 113 in. An A1 format has a diagonal length of 1,029.62 mm or 40.54 in. The A1 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.