JB8 Paper Size, Dimensions and Format (Japanese series)


64 x 91




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


The JB8 format measures 64 x 91 mm or 2.5 x 3.6 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.

Frequently Asked Questions

The size of an JB8 paper is 64 x 91 mm

The size of an JB8 paper in inches is 2.5 x 3.6 in

The half size of an JB8 paper is 32 x 45.5 mm or 1.25 x 1.8 in

The aspect ratio of an JB8 is 1:1.42

The area of an JB8 paper is 5,824 mm or 9 in

The perimeter of an JB8 paper is 310 mm or 12.20 in

The diagonal measurement of JB8 paper is 111.25 mm or 4.38 in

Other Japanese Paper Sizes →

There are a total of 18 Japanese Paper Sizes.