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Japanese Paper Sizes

Further 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 × Height (mm) Width × Height (in)
JB0 1030 × 1456 mm 40.6 × 57.3 in
JB1 728 × 1030 mm 28.7 × 40.6 in
JB2 515 × 728 mm 20.3 × 28.7 in
JB3 364 × 515 mm 14.3 × 20.3 in
JB4 257 × 364 mm 10.1 × 14.3 in
JB5 182 × 257 mm 7.2 × 10.1 in
JB6 128 × 182 mm 5 × 7.2 in
JB7 91 × 128 mm 3.6 × 5 in
JB8 64 × 91 mm 2.5 × 3.6 in
JB9 45 × 64 mm 1.8 × 2.5 in
JB10 32 × 45 mm 1.3 × 1.8 in
JB11 22 × 32 mm 0.9 × 1.3 in
JB12 16 × 22 mm 0.6 × 0.9 in
Shiroku ban 4 264 × 379 mm 10.4 × 14.9 in
Shiroku ban 5 189 × 262 mm 7.4 × 10.3 in
Shiroku ban 6 127 × 188 mm 5 × 7.4 in
Kiku 4 227 × 306 mm 8.9 × 12 in
Kiku 5 151 × 227 mm 5.9 × 8.9 in
Japanese Paper SizesJB1JB2JB3JB4JB5JB6