Japanese paper sizes

Information

The Japanese Industrial Standards (JIS), defines two main series of paper sizes. They are the JIS A Series, and the JIS B Series. Both of the these series are widely available in Japan, as well as China and Taiwan. The JIS A Series is exactly the same as the ISO A Series, but with different tolerances. Both the JIS A Series and the JIS B Series have the same aspect ratio, but the area of the B Series paper is 1.5 times larger than the A Series. As well as the JIS A and B Series, there are a number of traditional Japanese paper sizes used mostly by printers. These include Shiroku-ban and Kiku, which are the most commonly used.

Format	Width x Height (cm)	Width x Height (inches)
JB5	182 x 257	7.17 x 10.12
JB4	257 x 364	10.12 x 14.33
JB6	128 x 182	5.04 x 7.17
JB3	364 x 515	14.33 x 20.28
JB2	515 x 728	20.28 x 28.66
JB1	728 x 1030	28.66 x 40.55
JB0	1030 x 1456	40.55 x 57.32
JB7	91 x 128	3.58 x 5.04
JB8	64 x 91	2.52 x 3.58
JB9	45 x 64	1.77 x 2.52
JB10	32 x 45	1.26 x 1.77
JB11	22 x 32	0.87 x 1.26
JB12	16 x 22	0.63 x 0.87
Kiku 4	227 x 306	8.94 x 12.05
Kiku 5	151 x 227	5.94 x 8.94
Shiroku ban 4	264 x 379	10.39 x 14.92
Shiroku ban 5	189 x 262	7.44 x 10.31
Shiroku ban 6	127 x 188	5 x 7.4