Dimensions Of A Series Paper Sizes

Paper Size

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

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

SizeWidth x Height (mm)Width x Height (in)
B01030 x 1456 mm40.6 x 57.3 in
B1728 x 1030 mm28.7 x 40.6 in
B2515 x 728 mm20.3 x 28.7 in
B3364 x 515 mm14.3 x 20.3 in
B4257 x 364 mm10.1 x 14.3 in
B5182 x 257 mm7.2 x 10.1 in
B6128 x 182 mm5.0 x 7.2 in
B791 x 128 mm3.6 x 5.0 in
B864 x 91 mm2.5 x 3.6 in
B945 x 64 mm1.8 x 2.5 in
B1032 x 45 mm1.3 x 1.8 in

Traditional Paper Sizes

Japan has certain types of 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 mm10.39 x 14.92 in1:1.4356
189 x 262 mm7.44 x 10.31 in1:1.3862
127 x 188 mm5.00 x 7.40 in1:1.4803

Kiku Sizes

Length x Height (mm)Length x Height (in)Aspect Ratio
227 x 306 mm8.94 x 12.05 in1:1.3480
151 x 227 mm5.94 x 8.94 in1:1.5033

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

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.

SizeLength x Height (mm)Length x Height (in)Aspect Ratio
AB210 x 257 mm8.27 x 10.12 in1:1.2238
B40103 x 182 mm4.06 x 7.17 in1:1.7670
Shikisen84 x 148 mm3.31 x 5.83 in1:1.7619

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