Paper Drafting Sizes - ISO 216 series A, B and C

ISO 216 A, B and C drawing series - dimensions of regular, oversized and envelope sheets. Specifies international standard (ISO) paper sizes with three series: A, B and C. Series C is primarily used for envelopes.

SeriesSize (mm)Size (inches)
ISO A Series
A0841 x 118933.11 x 46.81
A1594 x 84123.39 x 33.1
A2420 x 59416.54 x 23.29
A3297 x 42011.69 x 16.54
A4210 x 2978.27 x 11.69
A5148 x 2105.83 x 8.27
A6105 x 148
A774 x 105
A852 x 74
A937 x 52
A1026 x 37
A1118 x 26
A1213 x 18
Oversized ISO A Series
RA0860 x 1220
RA1610 x 860
RA2430 x 610
RA3305 x 430
RA4215 x 305
RA5153 x 215
ISO B Series
B01000 x 141439.37 x 55.67
B1707 x 100027.83 x 39.37
B2500 x 70719.68 x 27.83
B3353 x 50013.90 x 19.68
B4250 x 3539.84 x 13.90
B5176 x 2506.93 x 9.84
B6125 x 176
B788 x 125
B862 x 88
B944 x 62
B1031 x 44
B1122 x 31
B1215 x 22
ISO C Series - Envelopes
C0917 x 129736.00 x 51.20
C1648 x 91725.60 x 36.00
C2458 x 64818.00 x 25.60
C3324 x 45812.80 x 18.00
C4229 x 3249.00 x 12.80
C5162 x 2296.40 x 9.0
C6114 x 162
C781 x 114
C857 x 81
Other Commonly Used Formats
Letter215.9 x 279.4
Legal215.9 x 355.6
Executive190.5 x 254.0
C5E163.0 x 229.0
Comm10105.0 x 241.0
DLE110.0 x 220.0
Folio210.0 x 330.0
Ledger432.0 x 279.0
Tabloid279.0 x 432.0
Paper Drafting Sizes - ISO 216 series A, B and C | MEPKit Engineering Tools | MEPKit