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Comparison of Wire Gauges

    Diameter   Area        
American (B∓S) Wire Gauge British Standard (NBS) Wire Gauge Mils Millimeters Circular Mils Square Inches Ohms per 1000,Ft at 20C (68F) Ohms per 1 Ft at 20C (68F) Ft per ohm at 20C (68F)
0000   460.0   211,600 0.1662 0.04901 0.00004901 20,400
000   409.6   167,800 0.1318 0.06180 0.00006180 16,180
00   364.8   133,100 0.1045 0.07793 0.00007793 12,830
0 - 324.9 8.251 105,500 0.08289 0.09827 0.00009827 10,180
- 0 324.0 8.230 105,000 0.08245      
- 1 300.0 7.620 90,000 0.07069      
1 - 289.3 7.348 83,690 0.06573 0.1239 0.0001239 5,070
- 2 276.0 7.010 76,180 0.05963      
2 - 257.6 6.544 66,370 0.05213 0.1563 0.0001563 6,400
- 3 252.0 6.401 63,500 0.04988      
- 4 232.0 5.893 53,820 0.04227      
3 - 229.4 5.827 52,630 0.04134 0.1970 0.0001970 5,075
- 5 212.0 5.385 44,940 0.03530      
4 - 204.3 5.189 41,740 0.03278 0.2485 0.0002485 4,025
- 6 192.0 4.877 36,860 0.02895      
5 - 181.9 4.621 33,100 0.02600 0.3133 0.0003133 3,192
- 7 176.0 4.470 30,980 0.02433      
6 - 162.0 4.116 26,250 0.02062 0.3951 0.0003951 2,531
- 8 160.0 4.064 25,600 0.02011      
7 - 144.3 3.665 20,820 0.01635 0.4982 0.0004982 2,007
- 9 144.0 3.658 20,740 0.01629      
8 - 128.8 3.264 16,510 0.01297 0.6282 0.0006282 1,592
- 10 128.0 3.251 16,380 0.01267      
-  11 116.0 2.946 13,460 0.01057      
9 - 114.4 2.906 13,090 0.01028 0.7921 0.0007921 1,262
- 12 104.0 2.642 10,820 0.008495      
10 - 101.9 2.588 10,380 0.008155 0.9989 0.0009989 1,001
- 13 92.00 2.337 8,464 0.006648      
11 - 90.74 2.305 8,234 0.006467 1.260 0.00126 794
12 - 80.81 2.053 6,530 0.005129 1.588 0.001588 629.6
- 14 80.00 2.032 6,400 0.005027      
- 15 72.00 1.829 5,184 0.004072      
13 - 71.96 1.828 5,178 0.004067 2.003 0.002003 499.3
14 - 64.08 1.628 4,107 0.003225 2.525 0.002525 396.0
- 16 64.00 1.626 4,096 0.003217      
15 - 57.07 1.450 3,257 0.002558 3.184 0.003184 314.0
- 17 56.00 1.422 3,136 0.002463      
16 - 50.82 1.291 2,583 0.002028 4.016 0.004016 249.0
- 18 48.00 1.219 2,304 0.001810      
17 - 45.26 1.150 2,048 0.001609 5.064 0.005064 197.5
18 - 40.30 1.024 1,624 0.001276 6.385 0.006385 156.6
- 19 40.00 1.016 1,600 0.001257      
- 20 36.00 0.9144 1,296 0.001018      
19 - 35.89 0.9116 1,288 0.001012 8.051 0.008051 124.2
- 21 32.00 0.8128 1,024 0.0008042      
20 - 31.96 0.8118 1,022 0.0008023 10.15 0.01015 98.50
    30.00            
    29.00            
21 - 28.46   810.1 0.0006363 12.80 0.01280 78.11
    28.00            
    27.00            
    26.00            
22 - 25.35   642.4 0.0005046 16.14 0.01614 61.95
    25.00            
    24.00            
    23.00            
23 - 22.57   509.5 0.0004002 20.36 0.02036 49.13
    22.00            
    21.00            
24 - 20.10   404.0 0.0003173 25.67 0.02567 38.96
    20.00            
    19.00            
    18.00            
25 - 17.90   320.4 0.0002517 32.37 0.03237 30.90
    17.00            
    16.00            
26 - 15.94   254.1 0.0001996 40.81 0.04081 24.50
    15.00            
27 - 14.20   201.5 0.0001583 51.47 0.05147 19.43
    13.00            
28 - 12.64   159.8 0.0001255 64.90 0.06490 15.41
    12.00            
  - 11.26   126.7 0.00009953 81.83 0.08183 12.22
    11.00            
30 - 10.03   100.5 0.00007894 103.2 0.1032 9.691
    9.00            
31 - 8.928   79.70 0.00006260 130.1 0.1301 7.685
    8.00            
32 - 7.950   63.21 0.00004964 164.1 0.1641 6.095
33 - 7.080   50.13 0.00003937 206.9 0.2069 4.833
    7.00            
34 - 6.305   39.75 0.00003122 260.9 0.2609 3.833
    6.00            
35 - 5.615   31.52 0.00002476 329.0 0.3290 3.040
36 - 5.000   25.00 0.00001964 414.8 0.4148 2.411
37 - 4.453   19.83 0.00001557 523.1 0.5231 1.912
    4.00            
38 - 3.965   15.72 0.00001235 659.6 0.6596 1.516
39 - 3.531   12.47 0.000009793 831.8 0.8318 1.202
40 - 3.145   9.888 0.000007766 1049.0 1.0490 0.9534
    3.00            
    2.00            
    1.00