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A Series	mm	inches
A0	841 x 1189	33.11 x 46.81
A1	594 x 841	23.39 x 33.1
A2	420 x 594	16.54 x 23.29
A3	297 x 420	11.69 x 16.54
A4	210 x 297	8.27 x 11.69
A5	148 x 210	5.83 x 8.27

B Series	mm	inches
B0	1000 x 1414	39.37 x 55.67
B1	707 x 1000	27.83 x 39.37
B2	500 x 707	19.68 x 27.83
B3	353 x 500	13.90 x 19.68
B4	250 x 353	9.84 x 13.90
B5	176 x 250	6.93 x 9.84

C Series (envelopes)	mm	inches
C0	917 x 1297	36.00 x 51.20
C1	648 x 917	25.60 x 36.00
C2	458 x 648	18.00 x 25.60
C3	324 x 458	12.80 x 18.00
C4	229 x 324	9.00 x 12.80
C5	162 x 229	6.40 x 9.0
DL	110 x 220	4.33 x 8.66

Common Office Paper Sizes US/Imperial

US / Imperial papers	Inches	mm
Executive	71/4 x 10 1/2	184 x 267
Folio / F4	81/4 x 13	210 x 330
Foolscap E	8 x 13	203 x 330
Index card 5x8	5 x 8	127 x 203
Ledger	17 x 11	432 x 279
Legal	8 1/2 x 14	216 x 356
Letter / US, A / ANSI A	8 1/2 x 11	216 x 279
Photo 4x6	4 x 6	102 x 152
Quarto	8 1/2 x 10 13/16	216 x 275
Statement / Halfletter	5 1/2 x 8 1/2	140 x 216
Tabloid / US, B / ANSI B	11 x 17	279 x 432