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Wire Gauge Chart

Gauge (aka Gage) Definition : The size of a wire is the measure of its diameter. For convenience, the different wires are numbered in order of decreasing size, the number being known as the gauge, or gage; the higher the gauge the smaller the diameter. The number of gauges used and their sizes differ according to the kind of wire and the country's standards of measurement. In the United States the American wire gauge, known also as the Brown & Sharpe wire gauge (abbr. B. & S.), is used; in Great Britain and Canada the British, or imperial, standard wire gauge (S.W.G.) is employed. For steel wire the steel wire gauge (also known as the Washburn & Moen, the Roebling, or the American Steel & Wire Co.'s wire gauge) is employed.
-- From Encyclopedia.com from Electric Library
ResistanceWire.Com and Hyndman Industrial Products, Inc. stock the American Standard/Brown & Sharpe (AWG) system almost exclusively; however, as a number of gauges are in use for various shapes and metals, it is advisable to state the thickness in thousandths of an inch when specifying wire in gauge number.
Wire Gauge (AWG) (BWG) (USSWG) W & M S & W (SWG) Stubs' (USG) (MSG) Wire Gauge
(Gauge) (Inches) (mm) (Inches) (Inches) (Inches) (Inches) (Inches) (Inches) (Inches) (Inches) (Gauge)
00000000 (8/0) 0.7314 18.578 - - 0.0083 - - - - - 00000000 (8/0)
0000000 (7/0) 0.6514 16.546 - - 0.0087 - 0.5000 - 0.50000 0.4783 0000000 (7/0)
000000 (6/0) 0.5801 14.735 - - 0.0095 0.004 0.4640 - 0.46875 0.4484 000000 (6/0)
00000 (5/0) 0.5166 13.122 - - 0.0100 0.005 0.4320 - 0.43750 0.4185 00000 (5/0)
0000 (4/0) 0.4600 11.684 0.454 0.3938 0.0110 0.006 0.4000 - 0.40625 0.3886 0000 (4/0)
000 (3/0) 0.4096 10.405 0.425 0.3625 0.0120 0.007 0.3720 - 0.37500 0.3587 000 (3/0)
00 (2/0) 0.3648 9.266 0.380 0.3310 0.0133 0.008 0.3480 - 0.34375 0.3288 00 (2/0)
0 0.3249 8.251 0.340 0.3065 0.0144 0.009 0.3240 - 0.31250 0.2990 0
1 0.2893 7.348 0.300 0.2830 0.0156 0.010 0.3000 0.227 0.28125 0.2690 1
2 0.2576 6.544 0.284 0.2625 0.0166 0.011 0.2760 0.219 0.26563 0.2541 2
3 0.2294 5.827 0.259 0.2437 0.0178 0.012 0.2520 0.212 0.25000 0.2391 3
4 0.2043 5.189 0.238 0.2253 0.0188 0.013 0.2320 0.207 0.23438 0.2242 4
5 0.1819 4.621 0.220 0.2070 0.0202 0.014 0.2120 0.204 0.21875 0.2092 5
6 0.1620 4.115 0.203 0.1920 0.0215 0.016 0.1920 0.201 0.20313 0.1943 6
7 0.1443 3.665 0.180 0.1770 0.0230 0.018 0.1760 0.199 0.18750 0.1793 7
8 0.1285 3.264 0.165 0.1620 0.0243 0.020 0.1600 0.197 0.17188 0.1644 8
9 0.1144 2.907 0.148 0.1483 0.0256 0.022 0.1440 0.194 0.15625 0.1495 9
10 0.1019 2.588 0.134 0.1350 0.0270 0.024 0.1280 0.191 0.14063 0.1345 10
11 0.0907 2.305 0.120 0.1205 0.0284 0.026 0.1160 0.188 0.12500 0.1196 11
12 0.0808 2.053 0.109 0.1055 0.0296 0.029 0.1040 0.185 0.09375 0.1046 12
13 0.0720 1.828 0.095 0.0915 0.0314 0.031 0.0920 0.182 0.09375 0.0897 13
14 0.0641 1.628 0.083 0.0800 0.0326 0.033 0.0800 0.180 0.07813 0.0747 14
15 0.0571 1.450 0.072 0.0720 0.0345 0.035 0.0720 0.178 0.07031 0.0673 15
16 0.0508 1.291 0.065 0.0625 0.0360 0.037 0.0640 0.175 0.06250 0.0598 16
17 0.0453 1.150 0.054 0.0540 0.0377 0.039 0.0560 0.172 0.05625 0.0538 17
18 0.0403 1.024 0.049 0.0475 0.0395 0.041 0.0480 0.168 0.05000 0.0478 18
19 0.0359 0.912 0.042 0.0410 0.0414 0.043 0.0400 0.164 0.04375 0.0418 19
20 0.0320 0.812 0.035 0.0348 0.0434 0.045 0.0360 0.161 0.03750 0.0359 20
21 0.0285 0.723 0.032 0.0318 0.0460 0.047 0.0320 0.157 0.03438 0.0329 21
22 0.0253 0.644 0.028 0.0286 0.0483 0.049 0.0280 0.155 0.03125 0.0299 22
23 0.0226 0.573 0.025 0.0258 0.0510 0.051 0.0240 0.153 0.02813 0.0269 23
24 0.0201 0.511 0.022 0.0230 0.0550 0.055 0.0220 0.151 0.02500 0.0239 24
25 0.0179 0.455 0.020 0.0204 0.0586 0.059 0.0200 0.148 0.02188 0.0209 25
26 0.0159 0.405 0.018 0.0181 0.0626 0.063 0.0180 0.146 0.01875 0.0179 26
27 0.0142 0.361 0.016 0.0173 0.0658 0.067 0.0164 0.143 0.01719 0.0164 27
28 0.0126 0.321 0.014 0.0162 0.7200 0.071 0.0149 0.139 0.01563 0.0149 28
29 0.0113 0.286 0.013 0.0150 0.0760 0.075 0.0136 0.134 0.01406 0.0135 29
30 0.0100 0.255 0.012 0.0140 0.0800 0.080 0.0124 0.127 0.01250 0.0120 30
31 0.0089 0.227 0.010 0.0132 - 0.085 0.0116 0.120 0.01094 0.0105 31
32 0.0080 0.202 0.009 0.0128 - 0.090 0.0108 0.115 0.01016 0.0097 32
33 0.0071 0.180 0.008 0.0118 - 0.095 0.0100 0.112 0.00938 0.0090 33
34 0.0063 0.160 0.007 0.0104 - - 0.0092 0.110 0.00859 0.0082 34
35 0.0056 0.143 0.005 0.0095 - - 0.0084 0.108 0.00781 0.0075 35
36 0.0050 0.127 0.004 0.0090 - - 0.0076 0.106 0.00703 0.0067 36
37 0.0045 0.113 - 0.0085 - - 0.0068 0.103 0.00664 0.0064 37
38 0.0040 0.101 - 0.0080 - - 0.0060 0.101 0.00625 0.0060 38
39 0.0035 0.090 - 0.0075 - - 0.0052 0.099 0.00590 0.0056 39
40 0.0031 0.080 - 0.0070 - - 0.0048 0.097 - - 40
41 0.0028 0.071 - 0.0066 - - 0.0044 - - - 41
42 0.0025 0.064 - 0.0062 - - 0.0040 - - - 42
43 0.0022 0.056 - 0.0060 - - 0.0036 - - - 43
44 0.0020 0.051 - 0.0058 - - 0.0032 - - - 44
45 0.0018 0.046 - 0.0055 - - 0.0028 - - - 45
46 0.0016 0.041 - 0.0052 - - 0.0024 - - - 46
47 0.0014 0.036 - 0.0050 - - 0.0020 - - - 47
48 0.0012 0.030 - 0.0048 - - 0.0016 - - - 48
49 0.0011 0.028 - 0.0046 - - 0.0012 - - - 49
50 0.0010 0.025 - 0.0044 - - 0.0010 - - - 50
51 0.00088 0.022 - - - - - - - - 51
52 0.00078 0.020 - - - - - - - - 52
53 0.00070 0.018 - - - - - - - - 53
54 0.00062 0.016 - - - - - - - - 54
55 0.00055 0.014 - - - - - - - - 55
56 0.00049 0.012 - - - - - - - - 56
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