Paper Sizes

Common US sizes to Japanese approximates

US approximate Japan Actual size (inches)
81/2 x 11 (letter) A4 81/4 x 1111/16
51/2 x 11 (half-letter) A5 513/16 x 81/4
81/2 x 14 (legal) A4 81/4 x 1111/16
5 x 8 (junior legal) A5 513/16 x 81/4
71/4 x 101/2 (executive) B5 73/16 x 101/8
11 x 17 (ledger / tabloid) A3 1111/16 x 161/2

Metric / Imperial to Japan Industrial Standard

JIS A Series
Name MM Inches
A0 841 x 1189 331/8 x 4613/16
A1 594 x 841 233/8 x 331/8
A2 420 x 594 161/2 x 233/8
A3 297 x 420 1111/16 x 161/2
A4 210 x 297 81/4 x 1111/16
A5 148 x 210 513/16 x 81/4
A6 105 x 148 41/8 x 513/16
A7 74 x 105 215/16 x 41/8
A8 52 x 74 21/16 x 215/16
A9 37 x 52 17/16 x 21/16
A10 26 x 37 1 x 17/16
A11 18 x 26 11/16 x 1
A12 13 x 18 1/2 x 11/16
JIS B Series
Name MM Inches
B0 1030 x 1456 409/16 x 575/16
B1 728 x 1030 2811/16 x 409/16
B2 515 x 728 201/4 x 2811/16
B3 364 x 515 145/16 x 201/4
B4 257 x 364 101/8 x 145/16
B5 182 x 257 73/16 x 101/8
B6 128 x 182 51/16 x 73/16
B7 91 x 128 39/16 x 51/16
B8 64 x 91 21/2 x 39/16
B9 45 x 64 13/4 x 21/2
B10 32 x 45 11/4 x 13/4
B11 22 x 32 7/8 x 11/4
B12 16 x 22 5/8 x 7/8