A11 Paper Size, Dimensions and Format (A series)

A11 in millimetres

18 x 26 mm




Aspect ratio 1:1.44
Area (A) 468 mm²
Perimeter (P) 88 mm
Diagonal (d) 31.62 mm


The A11 format measures 18 x 26 mm or inches. An A11 paper fromat has an aspect ratio of 1:1.44. The Area of the A11 paper size is 468 mm² or 0.70 in² with a perimeter of 88 mm or 3.40 in. An A11 format has a diagonal length of 31.62 mm or 1.22 in. The A11 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.