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Wire Gauge Reference Table

All Gauge measurements throughout this website are American Wire Gauge (AWG). Diameter information in the table applies to solid wires. Stranded wires are calculated by calculating the equivalent cross sectional copper area. Gauges stocked are highlighted below in bold.

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/MM Bare Dia. (Inch) Bare Dia. (MM) AWG No. SWG No. BWG No. Circular Mils
6/0 AWG 0.580000 14.73200 6/0 - - - - 336,390.338592
5/0 AWG 0.516500 13.11910 5/0 7/0 - - 266,764.588301
7/0 SWG 0.500000 12.70000 5/0 7/0 - - 249,992.820000
6/0 SWG 0.464000 11.78560 4/0 6/0 4/0 215,289.816699
4/0 AWG 0.460000 11.68400 4/0 4/0 4/0 211,593.922848
4/0 BWG 0.454000 11.53160 4/0 4/0 4/0 206,110.080348
5/0 SWG 0.432000 10.97280 4/0 5/0 3/0 186,618.640159
3/0 BWG 0.425000 10.79500 3/0 3/0 3/0 180,619.812450
3/0 AWG 0.409600 10.40384 3/0 3/0 3/0 167,767.341584
4/0 SWG 0.400000 10.16000 4/0 4/0 4/0 159,995.404800
2/0 BWG 0.380000 9.65200 2/0 2/0 2/0 144,395.852832
3/0 SWG 0.372000 9.44880 3/0 3/0 3/0 138,380.025612
2/0 AWG 0.364800 9.26592 2/0 2/0 2/0 133,075.217970
2/0 SWG 0.348000 8.83920 2/0 2/0 2/0 121,100.521893
0 BWG 0.340000 8.63600 0 0 0 115,596.679968
0 AWG 0.324900 8.25246 0 0 0 105,556.978317
0 SWG 0.324000 8.22960 0 0 0 104,972.985089
1 SWG 0.300000 7.62000 1 1 1 89,997.415200
1 BWG 0.300000 7.62000 1 1 1 89,997.415200
1 AWG 0.289300 7.34822 1 1 1 83,692.086294
2 BWG 0.283000 7.18820 2 2 2 80,086.699844
2 SWG 0.276000 7.01040 2 2 2 76,173.812225
1.5 AWG 0.273003 6.93428 1.5 2 2 74,528.497489
3 BWG 0.259000 6.57860 2 3 3 67,079.073434
2 AWG 0.258000 6.55320 2 2 3 66,562.088282
3 SWG 0.252000 6.40080 2 3 3 63,502.176165
2.5 AWG 0.243116 6.17515 2.5 3 4 59,103.691949
4 BWG 0.238000 6.04520 3 4 4 56,642.373184
4 SWG 0.232000 5.89280 3 4 4 53,822.454175
3 AWG 0.229000 5.81660 3 4 5 52,439.493894
5 BWG 0.220000 5.58800 3 5 5 48,398.609952
3.5 AWG 0.216501 5.49913 3.5 4 6 46,871.336818
5 SWG 0.212000 5.38480 4 5 5 44,942.709208
4 AWG 0.204000 5.18160 4 5 6 41,614.804788
6 BWG 0.203000 5.15620 4 6 6 41,207.816478
4.5 AWG 0.192800 4.89712 4.5 6 7 37,170.772425
5 AWG 0.182000 4.62280 5 7 7 33,123.048679
7 BWG 0.179000 4.54660 5 8 7 32,040.079782
5.5 AWG 0.171693 4.36100 5.5 7 8 29,477.639627
8 BWG 0.164000 4.16560 6 8 8 26,895.227547
6 AWG 0.162023 4.11538 6 7 8 26,250.698587
6.5 AWG 0.152897 3.88358 6.5 9 9 23,376.821207
9 BWG 0.147000 3.73380 7 9 9 21,608.379390
7 AWG 0.144285 3.66484 7 9 9 20,817.563327
9 SWG 0.144000 3.65760 7 9 9 20,735.404462
7.5 AWG 0.136459 3.46606 7.5 9 10 18,620.523884
10 BWG 0.134000 3.40360 8 10 10 17,955.484304
3.35 MM 0.131890 3.34999 8 9 10 17,394.340630
8 AWG 0.128500 3.26390 8 10 10 16,511.775768
10 SWG 0.128000 3.25120 8 10 10 16,383.529452
3.15 MM 0.124016 3.14999 8 10 11 15,379.402531
8.5 AWG 0.121253 3.07983 8.5 10 11 14,701.867759
11 BWG 0.120000 3.04800 9 11 11 14,399.586432
3 MM 0.118110 2.99999 9 10 11 13,949.571457
11 SWG 0.116000 2.94640 9 11 11 13,455.613544
9 AWG 0.114400 2.90576 9 11 11 13,086.984131
2.8 MM 0.110236 2.79999 9 11 12 12,151.626691
12 BWG 0.109000 2.76860 10 12 12 11,880.658778
9.5 AWG 0.107979 2.74267 9.5 11 12 11,659.129581
2.65 MM 0.104331 2.64999 10 11 12 10,884.540617
12 SWG 0.104000 2.64160 10 12 12 10,815.689364
10 AWG 0.101900 2.58826 10 12 12 10,383.311783
2.5 MM 0.098425 2.50000 10 12 13 9,687.202401
10.5 AWG 0.096158 2.44241 10.5 12 13 9,246.095409
13 BWG 0.095000 2.41300 11 13 13 9,024.740802
2.36 MM 0.092913 2.36000 11 12 13 8,632.614798
13 SWG 0.092000 2.33680 11 13 13 8,463.756914
11 AWG 0.090700 2.30378 11 13 13 8,226.253735
2.24 MM 0.088189 2.24000 11 13 14 7,777.041082
11.5 AWG 0.085800 2.17932 11.5 13 14 7,361.428574
2.12 MM 0.083464 2.12000 12 14 14 6,966.105995
14 BWG 0.083000 2.10820 12 14 14 6,888.802148
12 AWG 0.080800 2.05232 12 14 14 6,528.452497
14 SWG 0.080000 2.03200 12 14 14 6,399.816192
2 MM 0.078740 2.00000 12 14 15 6,199.809536
12.5 AWG 0.076400 1.94056 12.5 14 15 5,836.792363
1.9 MM 0.074803 1.90000 13 15 15 5,595.328107
13 AWG 0.072000 1.82880 13 15 15 5,183.851116
15 SWG 0.072000 1.82880 13 15 15 5,183.851116
15 BWG 0.072000 1.82880 13 15 15 5,183.851116
1.8 MM 0.070866 1.80000 13 15 16 5,021.845724
13.5 AWG 0.068100 1.72974 13.5 15 16 4,637.476808
1.7 MM 0.066929 1.70000 14 16 16 4,479.362390
16 BWG 0.065000 1.65100 14 16 16 4,224.878658
14 AWG 0.064100 1.62814 14 16 16 4,108.691995
16 SWG 0.064000 1.62560 14 16 16 4,095.882363
1.6 MM 0.062992 1.60000 14 16 17 3,967.878103
14.5 AWG 0.060500 1.53670 14.5 16 17 3,660.144878
1.5 MM 0.059055 1.50000 15 17 17 3,487.392864
17 BWG 0.058000 1.47320 15 17 17 3,363.903386
15 AWG 0.057100 1.45034 15 17 17 3,260.316361
17 SWG 0.056000 1.42240 15 17 17 3,135.909934
1.4 MM 0.055118 1.40000 15 17 18 3,037.906673
15.5 AWG 0.053900 1.36906 15.5 16 18 2,905.126562
1.32 MM 0.051968 1.32000 16 17 18 2,700.637034
1.3 MM 0.051200 1.30048 16 18 18 2,621.364712
16 AWG 0.050800 1.29032 16 18 18 2,580.565884
1.25 MM 0.049213 1.25000 16 18 18 2,421.800600
18 BWG 0.049000 1.24460 16 18 18 2,400.931043
18 SWG 0.048000 1.21920 16 18 18 2,303.933829
16.5 AWG 0.048000 1.21920 16.5 17 19 2,303.933829
1.2 MM 0.047200 1.19888 17 18 19 2,227.776016
1.18 MM 0.046457 1.18000 17 18 19 2,158.153700
17 AWG 0.045300 1.15062 17 18 19 2,052.031064
1.15 MM 0.045275 1.14999 17 18 19 2,049.766754
1.12 MM 0.044094 1.12000 17 19 19 1,944.260271
1.1 MM 0.043300 1.09982 17 19 20 1,874.836153
17.5 AWG 0.042700 1.08458 17.5 18 20 1,823.237635
19 BWG 0.042000 1.06680 18 19 19 1,763.949338
1.06 MM 0.041732 1.06000 18 19 20 1,741.526499
18 AWG 0.040300 1.02362 18 19 20 1,624.043356
19 SWG 0.040000 1.01600 18 19 19 1,599.954048
1 MM 0.039370 1.00000 18 20 20 1,549.952384
18.5 AWG 0.038000 0.96520 18.5 19 21 1,443.958528
.95 MM 0.037402 0.95000 19 20 21 1,398.832027
20 SWG 0.036000 0.91440 19 20 20 1,295.962779
19 AWG 0.035900 0.91186 19 20 21 1,288.772985
.9 MM 0.035433 0.90000 19 20 21 1,255.461431
20 BWG 0.035000 0.88900 19 20 20 1,224.964818
19.5 AWG 0.033900 0.86106 19.5 20 22 1,149.176995
.85 MM 0.033465 0.85000 20 21 21 1,119.840598
20 AWG 0.032000 0.81280 20 21 21 1,023.970591
21 SWG 0.032000 0.81280 20 21 21 1,023.970591
.8 MM 0.031496 0.80000 20 21 22 991.969526
21 BWG 0.031000 0.78740 20 21 21 960.972400
20.5 AWG 0.030200 0.76708 20.5 21 22 912.013806
.75 MM 0.029528 0.75000 21 22 22 871.848216
21 AWG 0.028500 0.72390 21 22 22 812.226672
22 SWG 0.028000 0.71120 21 22 22 783.977484
22 BWG 0.028000 0.71120 21 22 22 783.977484
.71 MM 0.027953 0.71000 21 22 22 781.330997
.7 MM 0.027600 0.70104 21 22 23 761.738122
21.5 AWG 0.026900 0.68326 21.5 22 23 723.589218
.65 MM 0.025600 0.65024 22 23 23 655.341178
22 AWG 0.025300 0.64262 22 23 23 640.071617
23 BWG 0.025000 0.63500 22 23 23 624.982050
.63 MM 0.024803 0.63000 22 23 23 615.176101
23 SWG 0.024000 0.60960 22 23 23 575.983457
22.5 AWG 0.023900 0.60706 22.5 23 24 571.193595
.6 MM 0.023622 0.60000 23 23 24 557.982858
24 BWG 0.023000 0.58420 23 24 24 528.984807
23 AWG 0.022600 0.57404 23 24 24 510.745331
.56 MM 0.022100 0.56134 23 24 24 488.395973
24 SWG 0.022000 0.55880 23 24 24 483.986100
.55 MM 0.021700 0.55118 24 25 25 470.876476
23.5 AWG 0.021300 0.54102 23.5 24 25 453.676970
24 AWG 0.020100 0.51054 24 25 25 403.998397
25 SWG 0.020000 0.50800 24 25 25 399.988512
25 BWG 0.020000 0.50800 24 25 25 399.988512
.5 MM 0.019685 0.50000 24 25 25 387.488096
24.5 AWG 0.019000 0.48260 24.5 25 26 360.989632
26 SWG 0.018000 0.45720 25 26 26 323.990695
26 BWG 0.018000 0.45720 21 22 26 323.990695
25 AWG 0.017900 0.45466 25 26 26 320.400798
.45 MM 0.017717 0.45000 25 26 27 313.865358
25.5 AWG 0.016900 0.42926 25.5 26 27 285.601797
.425 MM 0.016732 0.42500 26 27 27 279.960149
27 SWG 0.016400 0.41656 26 27 27 268.952275
27 BWG 0.016000 0.40640 26 27 27 255.992648
26 AWG 0.015900 0.40386 26 27 27 252.802739
.4 MM 0.015748 0.40000 26 27 28 247.992381
26.5 AWG 0.015000 0.38100 26.5 27 28 224.993538
28 SWG 0.014800 0.37592 27 28 28 219.033709
27 AWG 0.014200 0.36068 27 28 28 201.634209
.355 MM 0.013976 0.35500 27 28 29 195.332749
29 SWG 0.013600 0.34544 27 29 29 184.954688
28 BWG 0.013500 0.34290 28 28 28 182.244766
27.5 AWG 0.013400 0.34036 27.5 29 29 179.554843
29 BWG 0.013000 0.33020 28 29 29 168.995146
28 AWG 0.012600 0.32004 28 30 29 158.755440
.315 MM 0.012402 0.31500 28 30 30 153.794025
30 SWG 0.012400 0.31496 28 30 30 153.755584
30 BWG 0.012000 0.30480 29 30 30 143.995864
28.5 AWG 0.011900 0.30226 28.5 30 30 141.605933
.31 MM 0.011800 0.29972 29 31 31 139.236001
31 SWG 0.011600 0.29464 29 31 31 134.556135
29 AWG 0.011300 0.28702 29 31 30 127.686333
.28 MM 0.011024 0.28000 29 32 32 121.516267
32 SWG 0.010800 0.27432 29 32 32 116.636650
29.5 AWG 0.010600 0.26924 29.5 32 31 112.356773
30 AWG 0.010000 0.25400 30 33 31 99.997128
33 SWG 0.010000 0.25400 30 33 33 99.997128
31 BWG 0.010000 0.25400 30 33 31 99.997128
.25 MM 0.009843 0.25000 30 33 32 96.872024
30.5 AWG 0.009500 0.24130 30.5 33 32 90.247408
34 SWG 0.009200 0.23368 31 34 34 84.637569
32 BWG 0.009000 0.22860 31 31 32 80.997674
31 AWG 0.008900 0.22606 31 34 32 79.207725
.224 MM 0.008819 0.22400 31 35 33 77.770411
35 SWG 0.008400 0.21336 32 35 35 70.557974
31.5 AWG 0.008400 0.21336 31.5 34 33 70.557974
32 AWG 0.008000 0.20320 32 35 33 63.998162
33 BWG 0.008000 0.20320 32 35 33 63.998162
.2 MM 0.007874 0.20000 32 36 34 61.998095
36 SWG 0.007600 0.19304 32 36 36 57.758341
32.5 AWG 0.007500 0.19050 32.5 35 34 56.248385
33 AWG 0.007100 0.18034 33 36 34 50.408552
.18 MM 0.007087 0.18000 33 36 35 50.218457
35 BWG 0.007000 0.17780 33 36 35 48.998593
37 SWG 0.006800 0.17272 33 37 34 46.238672
33.5 AWG 0.006700 0.17018 33.5 36 34 44.888711
34 AWG 0.006300 0.16002 34 37 34 39.688860
.16 MM 0.006299 0.16000 34 37 36 39.678781
38 SWG 0.006000 0.15240 34 38 36 35.998966
34.5 AWG 0.005900 0.14986 34.5 37 35 34.809000
35 AWG 0.005600 0.14224 35 38 35 31.359099
.14 MM 0.005512 0.14000 35 38 35 30.379067
35.5 AWG 0.005300 0.13462 35.5 38 35 28.089193
39 SWG 0.005200 0.13208 36 39 35 27.039223
36 AWG 0.005000 0.12700 36 39 35 24.999282
35 BWG 0.005000 0.12700 36 39 35 24.999282
.125 MM 0.004921 0.12500 36 39 35 24.218006
40 SWG 0.004800 0.12192 36 40 35 23.039338
36.5 AWG 0.004700 0.11938 36.5 39 35 22.089366
37 AWG 0.004500 0.11430 37 40 35 20.249418
.112 MM 0.004409 0.11200 37 40 36 19.442603
41 SWG 0.004400 0.11176 37 41 36 19.359444
37.5 AWG 0.004200 0.10668 37.5 41 36 17.639493
38 AWG 0.004000 0.10160 38 42 36 15.999540
42 SWG 0.004000 0.10160 38 42 36 15.999540
36 BWG 0.004000 0.10160 38 40 36 15.999540
.1 MM 0.003937 0.10000 38 42 - - 15.499524
38.5 AWG 0.003700 0.09398 38.5 42 - - 13.689607
43 SWG 0.003600 0.09144 39 43 - - 12.959628
.09 MM 0.003543 0.09000 39 43 - - 12.554614
39 AWG 0.003500 0.08890 39 43 - - 12.249648
39.5 AWG 0.003300 0.08382 39.5 43 - - 10.889687
44 SWG 0.003200 0.08128 40 44 - - 10.239706
.08 MM 0.003150 0.08000 40 44 - - 9.919695
40 AWG 0.003100 0.07874 40 44 - - 9.609724
40.5 AWG 0.003000 0.07620 40.5 44 - - 8.999742
41 AWG 0.002800 0.07112 41 45 - - 7.839775
45 SWG 0.002800 0.07112 41 45 - - 7.839775
.071 MM 0.002795 0.07100 41 45 - - 7.813310
41.5 AWG 0.002600 0.06604 41.5 45 - - 6.759806
42 AWG 0.002500 0.06350 42 46 - - 6.249821
.063 MM 0.002480 0.06300 42 46 - - 6.151761
46 SWG 0.002400 0.06096 42 46 - - 5.759835
42.5 AWG 0.002400 0.06096 42.5 46 - - 5.759835
43 AWG 0.002200 0.05588 43 46 - - 4.839861
43.5 AWG 0.002100 0.05334 43.5 47 - - 4.409873
44 AWG 0.002000 0.05080 44 47 - - 3.999885
47 SWG 0.002000 0.05080 44 47 - - 3.999885
.05 MM 0.001969 0.05000 44 47 - - 3.874881
44.5 AWG 0.001866 0.04740 44.5 47 - - 3.481856
45 AWG 0.001761 0.04473 45 47 - - 3.101032
45.5 AWG 0.001662 0.04221 45.5 48 - - 2.762165
48 SWG 0.001600 0.04064 45.5 48 - - 2.559926
46 AWG 0.001568 0.03983 46 48 - - 2.458553
46.5 AWG 0.001480 0.03759 46.5 48 - - 2.190337
47 AWG 0.001397 0.03548 47 48 - - 1.951553
47.5 AWG 0.001318 0.03348 47.5 48 - - 1.737074
48 AWG 0.001244 0.03160 48 49 - - 1.547492
49 SWG 0.001200 0.03048 48 49 - - 1.439959
48.5 AWG 0.001174 0.02982 48.5 49 - - 1.378236
49 AWG 0.001108 0.02814 49 49 - - 1.227629
49.5 AWG 0.001045 0.02654 49.5 49 - - 1.091994
50 SWG 0.001000 0.02540 49 50 - - 0.999971
50 AWG 0.000986 0.02505 50 50 - - 0.972760
50.5 AWG 0.000931 0.02364 50.5 50 - - 0.866364
51 AWG 0.000878 0.02231 51 - - - - 0.771389
51.5 AWG 0.000829 0.02105 51.5 - - - - 0.687055
52 AWG 0.000782 0.01987 52 - - - - 0.611819
52.5 AWG 0.000738 0.01875 52.5 - - - - 0.544776
53 AWG 0.000697 0.01769 53 - - - - 0.485238
53.5 AWG 0.000657 0.01670 53.5 - - - - 0.432031
54 AWG 0.000620 0.01576 54 - - - - 0.384761
54.5 AWG 0.000585 0.01487 54.5 - - - - 0.342683
55 AWG 0.000552 0.01403 55 - - - - 0.305137
55.5 AWG 0.000521 0.01324 55.5 - - - - 0.271746
56 AWG 0.000492 0.01249 56 - - - - 0.241959
56.5 AWG 0.000464 0.01179 56.5 - - - - 0.215475
57 AWG 0.000438 0.01113 57 - - - - 0.191926
57.5 AWG 0.000413 0.01050 57.5 - - - - 0.170895
58 AWG 0.000390 0.00991 58 - - - - 0.152174
58.5 AWG 0.000368 0.00935 58.5 - - - - 0.135494
59 AWG 0.000347 0.00882 59 - - - - 0.120683
59.5 AWG 0.000328 0.00833 59.5 - - - - 0.107450
60 AWG 0.000309 0.00786 60 - - - - 0.095726