JB4 Paper Size, Dimensions and Format (Japanese series)


257 x 364




Aspect ratio 1:1.42
Perimeter (P) 1,242 mm
Diagonal (d) 445.58 mm
Area (A) 93,548 mm²


The JB4 format measures 257 x 364 mm or 10.1 x 14.3 inches. An JB4 paper fromat has an aspect ratio of 1:1.42. The Area of the JB4 paper size is 93,548 mm² or 144.43 in² with a perimeter of 1,242 mm or 48.80 in. An JB4 format has a diagonal length of 445.58 mm or 17.51 in. The JB4 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 JB4 paper is 257 x 364 mm

The size of an JB4 paper in inches is 10.1 x 14.3 in

The half size of an JB4 paper is 128.5 x 182 mm or 5.05 x 7.15 in

The aspect ratio of an JB4 is 1:1.42

The area of an JB4 paper is 93,548 mm or 144.43 in

The perimeter of an JB4 paper is 1,242 mm or 48.80 in

The diagonal measurement of JB4 paper is 445.58 mm or 17.51 in

Other Japanese Paper Sizes →

There are a total of 18 Japanese Paper Sizes.