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Wire Gauge Reference Table (AWG)

All Gauge measurements throughout this website are American Wire Gauge (AWG). Gauges stocked are highlighted below in bold. Diameter information in the table applies to solid wires only. Stranded wire gauges should be measured by calculating the equivalent cross sectional copper area. First, measure the bare diameter of a single strand and locate the circular mils value in the row that matches your measurement. Second, multiply the circular mils by the number of strands in the cable. Lastly, locate the row in the table with the circular mils number that most closely matches your calculation.

American Wire Gauge (AWG) is a system of numerical wire sizes that start with the lowest numbers (6/0) for the largest sizes. The gauge sizes are each 20.6% apart based on the cross sectional area. AWG is also known as Brown & Sharpe Gage.

SWG = Standard or Sterling Wire Gauge, a British wire measurement system.

BWG = Birmingham Wire Gauge, an old British wire measurement system that was widely used throughout the world.

Cir Mils or CMA = Circular Mil Area which is equal to 1/1000 (0.001) of an inch in diameter or 0.000507 MM.

AWG/SWG/BWG/MMBare Dia. (Inch)Bare Dia. (MM)AWGSWGBWGCircular Mils
6/0 AWG0.58000014.732006/0- -- -336,390.338592
5/0 AWG0.51650013.119105/07/0- -266,764.588301
7/0 SWG0.50000012.700005/07/0- -249,992.820000
6/0 SWG0.46400011.785604/06/04/0215,289.816699
4/0 AWG0.46000011.684004/04/04/0211,593.922848
4/0 BWG0.45400011.531604/04/04/0206,110.080348
5/0 SWG0.43200010.972804/05/03/0186,618.640159
3/0 BWG0.42500010.795003/03/03/0180,619.812450
3/0 AWG0.40960010.403843/03/03/0167,767.341584
4/0 SWG0.40000010.160004/04/04/0159,995.404800
2/0 BWG0.3800009.652002/02/02/0144,395.852832
3/0 SWG0.3720009.448803/03/03/0138,380.025612
2/0 AWG0.3648009.265922/02/02/0133,075.217970
2/0 SWG0.3480008.839202/02/02/0121,100.521893
0 BWG0.3400008.63600000115,596.679968
0 AWG0.3249008.25246000105,556.978317
0 SWG0.3240008.22960000104,972.985089
1 SWG0.3000007.6200011189,997.415200
1 BWG0.3000007.6200011189,997.415200
1 AWG0.2893007.3482211183,692.086294
2 BWG0.2830007.1882022280,086.699844
2 SWG0.2760007.0104022276,173.812225
1.5 AWG0.2730036.934281.52274,528.497489
3 BWG0.2590006.5786023367,079.073434
2 AWG0.2580006.5532022366,562.088282
3 SWG0.2520006.4008023363,502.176165
2.5 AWG0.2431166.175152.53459,103.691949
4 BWG0.2380006.0452034456,642.373184
4 SWG0.2320005.8928034453,822.454175
3 AWG0.2290005.8166034552,439.493894
5 BWG0.2200005.5880035548,398.609952
3.5 AWG0.2165015.499133.54646,871.336818
5 SWG0.2120005.3848045544,942.709208
4 AWG0.2040005.1816045641,614.804788
6 BWG0.2030005.1562046641,207.816478
4.5 AWG0.1928004.897124.56737,170.772425
5 AWG0.1820004.6228057733,123.048679
7 BWG0.1790004.5466058732,040.079782
5.5 AWG0.1716934.361005.57829,477.639627
8 BWG0.1640004.1656068826,895.227547
6 AWG0.1620234.1153867826,250.698587
6.5 AWG0.1528973.883586.59923,376.821207
9 BWG0.1470003.7338079921,608.379390
7 AWG0.1442853.6648479920,817.563327
9 SWG0.1440003.6576079920,735.404462
7.5 AWG0.1364593.466067.591018,620.523884
10 BWG0.1340003.403608101017,955.484304
3.35 MM0.1318903.34999891017,394.340630
8 AWG0.1285003.263908101016,511.775768
10 SWG0.1280003.251208101016,383.529452
3.15 MM0.1240163.149998101115,379.402531
8.5 AWG0.1212533.079838.5101114,701.867759
11 BWG0.1200003.048009111114,399.586432
3 MM0.1181102.999999101113,949.571457
11 SWG0.1160002.946409111113,455.613544
9 AWG0.1144002.905769111113,086.984131
2.8 MM0.1102362.799999111212,151.626691
12 BWG0.1090002.7686010121211,880.658778
9.5 AWG0.1079792.742679.5111211,659.129581
2.65 MM0.1043312.6499910111210,884.540617
12 SWG0.1040002.6416010121210,815.689364
10 AWG0.1019002.5882610121210,383.311783
2.5 MM0.0984252.500001012139,687.202401
10.5 AWG0.0961582.4424110.512139,246.095409
13 BWG0.0950002.413001113139,024.740802
2.36 MM0.0929132.360001112138,632.614798
13 SWG0.0920002.336801113138,463.756914
11 AWG0.0907002.303781113138,226.253735
2.24 MM0.0881892.240001113147,777.041082
11.5 AWG0.0858002.1793211.513147,361.428574
2.12 MM0.0834642.120001214146,966.105995
14 BWG0.0830002.108201214146,888.802148
12 AWG0.0808002.052321214146,528.452497
14 SWG0.0800002.032001214146,399.816192
2 MM0.0787402.000001214156,199.809536
12.5 AWG0.0764001.9405612.514155,836.792363
1.9 MM0.0748031.900001315155,595.328107
13 AWG0.0720001.828801315155,183.851116
15 SWG0.0720001.828801315155,183.851116
15 BWG0.0720001.828801315155,183.851116
1.8 MM0.0708661.800001315165,021.845724
13.5 AWG0.0681001.7297413.515164,637.476808
1.7 MM0.0669291.700001416164,479.362390
16 BWG0.0650001.651001416164,224.878658
14 AWG0.0641001.628141416164,108.691995
16 SWG0.0640001.625601416164,095.882363
1.6 MM0.0629921.600001416173,967.878103
14.5 AWG0.0605001.5367014.516173,660.144878
1.5 MM0.0590551.500001517173,487.392864
17 BWG0.0580001.473201517173,363.903386
15 AWG0.0571001.450341517173,260.316361
17 SWG0.0560001.422401517173,135.909934
1.4 MM0.0551181.400001517183,037.906673
15.5 AWG0.0539001.3690615.516182,905.126562
1.32 MM0.0519681.320001617182,700.637034
1.3 MM0.0512001.300481618182,621.364712
16 AWG0.0508001.290321618182,580.565884
1.25 MM0.0492131.250001618182,421.800600
18 BWG0.0490001.244601618182,400.931043
18 SWG0.0480001.219201618182,303.933829
16.5 AWG0.0480001.2192016.517192,303.933829
1.2 MM0.0472001.198881718192,227.776016
1.18 MM0.0464571.180001718192,158.153700
17 AWG0.0453001.150621718192,052.031064
1.15 MM0.0452751.149991718192,049.766754
1.12 MM0.0440941.120001719191,944.260271
1.1 MM0.0433001.099821719201,874.836153
17.5 AWG0.0427001.0845817.518201,823.237635
19 BWG0.0420001.066801819191,763.949338
1.06 MM0.0417321.060001819201,741.526499
18 AWG0.0403001.023621819201,624.043356
19 SWG0.0400001.016001819191,599.954048
1 MM0.0393701.000001820201,549.952384
18.5 AWG0.0380000.9652018.519211,443.958528
.95 MM0.0374020.950001920211,398.832027
20 SWG0.0360000.914401920201,295.962779
19 AWG0.0359000.911861920211,288.772985
.9 MM0.0354330.900001920211,255.461431
20 BWG0.0350000.889001920201,224.964818
19.5 AWG0.0339000.8610619.520221,149.176995
.85 MM0.0334650.850002021211,119.840598
20 AWG0.0320000.812802021211,023.970591
21 SWG0.0320000.812802021211,023.970591
.8 MM0.0314960.80000202122991.969526
21 BWG0.0310000.78740202121960.972400
20.5 AWG0.0302000.7670820.52122912.013806
.75 MM0.0295280.75000212222871.848216
21 AWG0.0285000.72390212222812.226672
22 SWG0.0280000.71120212222783.977484
22 BWG0.0280000.71120212222783.977484
.71 MM0.0279530.71000212222781.330997
.7 MM0.0276000.70104212223761.738122
21.5 AWG0.0269000.6832621.52223723.589218
.65 MM0.0256000.65024222323655.341178
22 AWG0.0253000.64262222323640.071617
23 BWG0.0250000.63500222323624.982050
.63 MM0.0248030.63000222323615.176101
23 SWG0.0240000.60960222323575.983457
22.5 AWG0.0239000.6070622.52324571.193595
.6 MM0.0236220.60000232324557.982858
24 BWG0.0230000.58420232424528.984807
23 AWG0.0226000.57404232424510.745331
.56 MM0.0221000.56134232424488.395973
24 SWG0.0220000.55880232424483.986100
.55 MM0.0217000.55118242525470.876476
23.5 AWG0.0213000.5410223.52425453.676970
24 AWG0.0201000.51054242525403.998397
25 SWG0.0200000.50800242525399.988512
25 BWG0.0200000.50800242525399.988512
.5 MM0.0196850.50000242525387.488096
24.5 AWG0.0190000.4826024.52526360.989632
26 SWG0.0180000.45720252626323.990695
26 BWG0.0180000.45720212226323.990695
25 AWG0.0179000.45466252626320.400798
.45 MM0.0177170.45000252627313.865358
25.5 AWG0.0169000.4292625.52627285.601797
.425 MM0.0167320.42500262727279.960149
27 SWG0.0164000.41656262727268.952275
27 BWG0.0160000.40640262727255.992648
26 AWG0.0159000.40386262727252.802739
.4 MM0.0157480.40000262728247.992381
26.5 AWG0.0150000.3810026.52728224.993538
28 SWG0.0148000.37592272828219.033709
27 AWG0.0142000.36068272828201.634209
.355 MM0.0139760.35500272829195.332749
29 SWG0.0136000.34544272929184.954688
28 BWG0.0135000.34290282828182.244766
27.5 AWG0.0134000.3403627.52929179.554843
29 BWG0.0130000.33020282929168.995146
28 AWG0.0126000.32004283029158.755440
.315 MM0.0124020.31500283030153.794025
30 SWG0.0124000.31496283030153.755584
30 BWG0.0120000.30480293030143.995864
28.5 AWG0.0119000.3022628.53030141.605933
.31 MM0.0118000.29972293131139.236001
31 SWG0.0116000.29464293131134.556135
29 AWG0.0113000.28702293130127.686333
.28 MM0.0110240.28000293232121.516267
32 SWG0.0108000.27432293232116.636650
29.5 AWG0.0106000.2692429.53231112.356773
30 AWG0.0100000.2540030333199.997128
33 SWG0.0100000.2540030333399.997128
31 BWG0.0100000.2540030333199.997128
.25 MM0.0098430.2500030333296.872024
30.5 AWG0.0095000.2413030.5333290.247408
34 SWG0.0092000.2336831343484.637569
32 BWG0.0090000.2286031313280.997674
31 AWG0.0089000.2260631343279.207725
.224 MM0.0088190.2240031353377.770411
35 SWG0.0084000.2133632353570.557974
31.5 AWG0.0084000.2133631.5343370.557974
32 AWG0.0080000.2032032353363.998162
33 BWG0.0080000.2032032353363.998162
.2 MM0.0078740.2000032363461.998095
36 SWG0.0076000.1930432363657.758341
32.5 AWG0.0075000.1905032.5353456.248385
33 AWG0.0071000.1803433363450.408552
.18 MM0.0070870.1800033363550.218457
34 BWG0.0070000.1778033363548.998593
37 SWG0.0068000.1727233373446.238672
33.5 AWG0.0067000.1701833.5363444.888711
34 AWG0.0063000.1600234373439.688860
.16 MM0.0062990.1600034373639.678781
38 SWG0.0060000.1524034383635.998966
34.5 AWG0.0059000.1498634.5373534.809000
35 AWG0.0056000.1422435383531.359099
.14 MM0.0055120.1400035383530.379067
35.5 AWG0.0053000.1346235.5383528.089193
39 SWG0.0052000.1320836393527.039223
36 AWG0.0050000.1270036393524.999282
35 BWG0.0050000.1270036393524.999282
.125 MM0.0049210.1250036393524.218006
40 SWG0.0048000.1219236403523.039338
36.5 AWG0.0047000.1193836.5393522.089366
37 AWG0.0045000.1143037403520.249418
.112 MM0.0044090.1120037403619.442603
41 SWG0.0044000.1117637413619.359444
37.5 AWG0.0042000.1066837.5413617.639493
38 AWG0.0040000.1016038423615.999540
42 SWG0.0040000.1016038423615.999540
36 BWG0.0040000.1016038403615.999540
.1 MM0.0039370.100003842- -15.499524
38.5 AWG0.0037000.0939838.542- -13.689607
43 SWG0.0036000.091443943- -12.959628
.09 MM0.0035430.090003943- -12.554614
39 AWG0.0035000.088903943- -12.249648
39.5 AWG0.0033000.0838239.543- -10.889687
44 SWG0.0032000.081284044- -10.239706
.08 MM0.0031500.080004044- -9.919695
40 AWG0.0031000.078744044- -9.609724
40.5 AWG0.0030000.0762040.544- -8.999742
41 AWG0.0028000.071124145- -7.839775
45 SWG0.0028000.071124145- -7.839775
.071 MM0.0027950.071004145- -7.813310
41.5 AWG0.0026000.0660441.545- -6.759806
42 AWG0.0025000.063504246- -6.249821
.063 MM0.0024800.063004246- -6.151761
46 SWG0.0024000.060964246- -5.759835
42.5 AWG0.0024000.0609642.546- -5.759835
43 AWG0.0022000.055884346- -4.839861
43.5 AWG0.0021000.0533443.547- -4.409873
44 AWG0.0020000.050804447- -3.999885
47 SWG0.0020000.050804447- -3.999885
.05 MM0.0019690.050004447- -3.874881
44.5 AWG0.0018660.0474044.547- -3.481856
45 AWG0.0017610.044734547- -3.101032
45.5 AWG0.0016620.0422145.548- -2.762165
48 SWG0.0016000.0406445.548- -2.559926
46 AWG0.0015680.039834648- -2.458553
46.5 AWG0.0014800.0375946.548- -2.190337
47 AWG0.0013970.035484748- -1.951553
47.5 AWG0.0013180.0334847.548- -1.737074
48 AWG0.0012440.031604849- -1.547492
49 SWG0.0012000.030484849- -1.439959
48.5 AWG0.0011740.0298248.549- -1.378236
49 AWG0.0011080.028144949- -1.227629
49.5 AWG0.0010450.0265449.549- -1.091994
50 SWG0.0010000.025404950- -0.999971
50 AWG0.0009860.025055050- -0.972760
50.5 AWG0.0009310.0236450.550- -0.866364
51 AWG0.0008780.0223151- -- -0.771389
51.5 AWG0.0008290.0210551.5- -- -0.687055
52 AWG0.0007820.0198752- -- -0.611819
52.5 AWG0.0007380.0187552.5- -- -0.544776
53 AWG0.0006970.0176953- -- -0.485238
53.5 AWG0.0006570.0167053.5- -- -0.432031
54 AWG0.0006200.0157654- -- -0.384761
54.5 AWG0.0005850.0148754.5- -- -0.342683
55 AWG0.0005520.0140355- -- -0.305137
55.5 AWG0.0005210.0132455.5- -- -0.271746
56 AWG0.0004920.0124956- -- -0.241959
56.5 AWG0.0004640.0117956.5- -- -0.215475
57 AWG0.0004380.0111357- -- -0.191926
57.5 AWG0.0004130.0105057.5- -- -0.170895
58 AWG0.0003900.0099158- -- -0.152174
58.5 AWG0.0003680.0093558.5- -- -0.135494
59 AWG0.0003470.0088259- -- -0.120683
59.5 AWG0.0003280.0083359.5- -- -0.107450
60 AWG0.0003090.0078660- -- -0.095726