JB1 (Japanese paper sizes), paper size
The area of Japanese B-series paper is 1.5 times that of the corresponding A-paper, so the length ratio is approximately 1.22 times the length of the corresponding A-series paper. The aspect ratio of the paper is the same as for A-series paper. Both A- and B-series paper is widely available in Japan and most photocopiers are loaded with at least A4 and B4 paper.There are also a number of traditional paper sizes, which are now used mostly only by printers. The most common of these old series are the Shiroku-ban and the Kiku paper sizes.
International paper size: A
International paper size: B
International paper size: C
North American paper sizes
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×12.44
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×9.75
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×6.22
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×6.22
-
×12.44
-
×6.22
-
×6.22
-
×3.11
-
×1.55
-
×0.78
-
×1.04
-
×24.8
-
×14.54
-
×10.82
-
×4.7
-
×3.89
-
×3.87
-
×2.95
-
×2.81
-
×2.69
-
×2.32
-
×1.81
-
×1.47
-
×0.74
Japanese paper sizes
Inch based paper sizes
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×0.34
-
×0.71
-
×0.96
-
×1.09
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×1.31
-
×1.43
-
×1.76
-
×1.68
-
×1.93
-
×2.13
-
×2.54
-
×2.04
-
×2.26
-
×2.73
-
×3.64
-
×4.25
-
×5.06
-
×5.31
-
×5.38
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×6.19