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Wire Gauge / Gage Conversion Chart

S.W.G.
(Inches)
Wire Number
(Gauge)
A.W.G. or B&S
(Inches)
A.W.G. Metric
(MM)
0.5 0000000 (7/0) ....................... ............
0.464 000000 (6/0) 0.58 ............
0.432 00000 (5/0) 0.5165 ............
0.4 0000 (4/0) 0.46 11684
0.372 000 (3/0) 0.409642 10404
0.348 00 (2/0) 0.364796 9266
0.324 0 (1/0) 0.324861 8252
0.3 1 0.289297 7348
0.276 2 0.257627 6543
0.252 3 0.229423 5827
0.232 4 0.2043 5189
0.212 5 0.1819 4621
0.192 6 0.162 4115
0.176 7 0.1443 3665
0.16 8 0.1285 3264
0.144 9 0.1144 2906
0.128 10 0.1019 2588
0.116 11 0.0907 2304
0.104 12 0.0808 2052
0.092 13 0.072 1829
0.08 14 0.0641 1628
0.072 15 0.0571 1450
0.064 16 0.0508 1291
0.056 17 0.0453 1150
0.048 18 0.0403 1024
0.04 19 0.0359 9119
0.036 20 0.032 8128
0.032 21 0.0285 7239
0.028 22 0.0253 6426
0.024 23 0.0226 5740
0.022 24 0.0201 5106
0.02 25 0.0179 4547
0.018 26 0.0159 4038
0.0164 27 0.0142 3606
0.0148 28 0.0126 3200
0.0136 29 0.0113 2870
0.0124 30 0.01 2540
0.0116 31 0.0089 2261
0.0108 32 0.008 2032
0.01 33 0.0071 1803
0.0092 34 0.0063 1601
0.0084 35 0.0056 1422
0.0076 36 0.005 1270
0.0068 37 0.0045 1143
0.006 38 0.004 1016
0.0052 39 0.0035 889
0.0048 40 0.0031 787
0.0044 41 0.0028 711
0.004 42 0.0025 635
0.0036 43 0.0022 559
0.0032 44 0.002 508
0.0028 45 0.0018 457
0.0024 46 0.0016 406
0.002 47 0.0014 350
0.0016 48 0.0012 0.0305
0.0012 49 0.0011 279
0.001 50 0.001 254
  51 0.00088 224
  52 0.00078 198
  53 0.0007 178
  54 0.00062 158
  55 0.00055 140
  56 0.00049 124

Wire Gauges / Gages Arranged In Columns As Follows:

AWG= American Wire Gauge
B&S= Brown & Sharpe
SWG= Imperial Standard Wire Gauge-(British legal standard)

Wire Gauge /Gage Comment:

Values are stated in approximate decimals of an inch excluding the metric numbers. As a number of gauges are in use for various shapes and metals, it is advisable to state the thickness in thousands when specifying in gauge number. Metric wire gauge is 10 times the diameter in millimeters.