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Wire Gauge Table - Imperial Sizes
The first column gives the Gauge Number and the other columns give the exact size in inches for the particular standard.
Gauge No  SWG    AWG    Stubbs  Birmingham Sheet MetalWashburn & MeonUS SheetS & W Music WireBirmingham Stubbs Iron
7/0.500  .6666.4900   
6/0.464  .6250.4615.4687.004 
5/0.432  .5883.4305.4375.005 
4/0.400.4600 .5416.3938.4062.006.464
3/0.372.4096 .5000.3625.3750.007.425
2/0.348.3648 .4452.3310.3437.008.380
0.324.3249 .3964.3065.3125.009.340
1.300.2893.227.3532.2830.2815.010.300
2.276.2576.219.3147.2625.2656.011.284
3.252.2294.212.2804.2437.2500.012.259
4.232.2043.207.2500.2253.2344.013.238
5.212.1819.204.2225.2070.2187.014.220
6.192.1620.201.1981.1920.2031.016.203
7.176.1443.199.1764.1770.1875.018.180
8.160.1285.197.1570.1620.1719.020.165
9.144.1164.194.1398.1483.1562.022.148
10.128.1019.191.1250.1350.1406.024.134
11.116.0907.188.1113.1205.1250.026.120
12.104.0808.185.0991.1055.1094.029.109
13.092.0720.182.0882.0915.0937.031.095
14.080.0641.180.0785.0800.0781.033.083
15.072.0571.178.0699.0720.0703.035.072
16.064.0508.175.0625.0625.0625.037.065
17.056.0453.172.0556.0540.0562.039.058
18.048.0403.168.0495.0475.0500.041.049
19.040.0359.164.0440.0410.0437.043.042
20.036.0320.161.0392.0348.0375.045.035
21.032.0285.157.0349.0317.0344.047.032
22.028.0253.155.0312.0286.0312.049.028
23.024.0226.153.0278.0258.0281.051.025
24.022.0201.151.0248.0230.0250.055.022
25.020.0179.148.0220.0204.0219.059.020
26.018.0159.146.0196.0181.0187.063.018
27.0164.0142.143.0174.0173.0172.067.016
28.0148.0126.139.0156.0162.0156.071.014
29.0136.0113.134.0139.0150.0141.075.013
30.0124.0100.127.0123.0140.0125.080.012
31.0116.0089.120.0110.0132.0109.085.010
32.0108.0079.115.0098.0128.0102.090.009
33.0100.0071.112.0087.0118.0094.095.008
34.0092.0063.110.0077.0104.0086.100.007
35.0084.0056.109.0069.0095.0078.106.006
36.0076.0050.106.0061.0090.0070.112.004
37.0068.0045.103.0054.0085.0066.118 
38.0060.0040.101.0048.0080.0062.124 
39.0052.0035.099.0043.0075 .130 
40.0048.0031.097.0039.0070 .038 
41.0044 .095.0034  .146 
42.0040 .092.0031  .154 
43.0036 .088.0027  .162 
44.0032 .085.0024  .170 
45.0028 .081.0021  .180 
46.0024 .079.0019    
47.0020 .077.0017    
48.0016 .075.0015    
49.0012 .072.0013    
50.0010 .069.0012