JB8 Paper Size, Dimensions and Format (Japanese series)

JB8 in millimetres

64 x 91 mm




Aspect ratio 1:1.42
Area (A) 5,824 mm²
Perimeter (P) 310 mm
Diagonal (d) 111.25 mm


The JB8 format measures 64 x 91 mm or inches. An JB8 paper fromat has an aspect ratio of 1:1.42. The Area of the JB8 paper size is 5,824 mm² or 9 in² with a perimeter of 310 mm or 12.20 in. An JB8 format has a diagonal length of 111.25 mm or 4.38 in. The JB8 size belongs to the Japanese series. In the Japanese series there are a total of 18 paper sizes.

Other Japanese Paper Sizes

There are a total of 18 Japanese Paper Sizes.