Japanese Paper Sizes - JIS A, JIS B & Traditional Paper Sizes

This article is all about Japanese Paper Sizes and their in-depth parts.

Standard Japanese Paper Sizes

The standardization for the paper sizes in a country like Japan is done by an organization called Japanese Industrial Standard Organization. This organization has defined two standard paper sizes called the JIS A and JIS B. The JIS A standard has certain similarities with the ISO 216 A size with minor differences whereas the JIS B sizes basically have significant differences in size than the ISO 216 B as it has an area of 1.5 times the A size of paper than the root 2 times mentioned in ISO 2016.

Table for JIS B Paper Sizes From B0 to B10

Size	Width x Height (mm)	Width x Height (in)
B0	1030 x 1456 mm	40.6 x 57.3 in
B1	728 x 1030 mm	28.7 x 40.6 in
B2	515 x 728 mm	20.3 x 28.7 in
B3	364 x 515 mm	14.3 x 20.3 in
B4	257 x 364 mm	10.1 x 14.3 in
B5	182 x 257 mm	7.2 x 10.1 in
B6	128 x 182 mm	5.0 x 7.2 in
B7	91 x 128 mm	3.6 x 5.0 in
B8	64 x 91 mm	2.5 x 3.6 in
B9	45 x 64 mm	1.8 x 2.5 in
B10	32 x 45 mm	1.3 x 1.8 in

Traditional Paper Sizes

Japan has certain types of Japanese paper sizes that the Japanese consider to be traditional. These are Shirokuban and Kiku. Also, many of the old printing mills and machines use these two paper sizes in Japan.

Shirokuban Sizes

Length x Height (mm)	Length x Height (in)	Aspect Ratio
264 x 379 mm	10.39 x 14.92 in	1:1.4356
189 x 262 mm	7.44 x 10.31 in	1:1.3862
127 x 188 mm	5.00 x 7.40 in	1:1.4803

Kiku Sizes

Length x Height (mm)	Length x Height (in)	Aspect Ratio
227 x 306 mm	8.94 x 12.05 in	1:1.3480
151 x 227 mm	5.94 x 8.94 in	1:1.5033

The paper size for Shirokuban is not fixed precisely, and it might vary from producer to producer.

See Also: –

A Series Paper Size Areas – A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10

Billboard Sizes/Dimensions – Including Multisheet Billboards

Other Paper Sizes Found In Japan

Apart from Shirokuban and Kiku, people use many other paper sizes in Japan. The popular ones like the AB format that has short side of A4 and the longer side of B5. One another form is B40 which has the size of 80% of B5.