JB7 Paper Size, Dimensions and Format (Japanese series)

JB7 in millimetres

91 x 128 mm




Aspect ratio 1:1.41
Area (A) 11,648 mm²
Perimeter (P) 438 mm
Diagonal (d) 157.05 mm


The JB7 format measures 91 x 128 mm or inches. An JB7 paper fromat has an aspect ratio of 1:1.41. The Area of the JB7 paper size is 11,648 mm² or 18 in² with a perimeter of 438 mm or 17.20 in. An JB7 format has a diagonal length of 157.05 mm or 6.16 in. The JB7 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.