Wire Number (Gauge) Conversion tables

 
 
Wire Number Standard Wire Guage Standard Wire Guage American Wire Guage American Wire Guage
(Gauge) SWG (mm) SWG (inches) (AWG or B&S) mm (AWG or B&S) inches
0000000 (7/0) 12.7 0.5    
000000 (6/0) 11.7856 0.464 14.732 0.58
00000 (5/0) 10.9728 0.432 13.1191 0.5165
0000 (4/0) 10.16 0.4 11.684 0.46
000 (3/0) 9.4488 0.372 10.40491 0.409642
00 (2/0) 8.8392 0.348 9.265818 0.364796
0 (1/0) 8.2296 0.324 8.251469 0.324861
1 7.62 0.3 7.348144 0.289297
2 7.0104 0.276 6.543726 0.257627
3 6.4008 0.252 5.827344 0.229423
4 5.8928 0.232 5.18922 0.2043
5 5.3848 0.212 4.62026 0.1819

 

Wire Number Standard Wire Guage Standard Wire Guage American Wire Guage American Wire Guage
(Gauge) SWG (mm) SWG (inches) (AWG or B&S) mm (AWG or B&S) inches
6 4.8768 0.192 4.1148 0.162
7 4.4704 0.176 3.66522 0.1443
8 4.064 0.16 3.2639 0.1285
9 3.6576 0.144 2.90576 0.1144
10 3.2512 0.128 2.58826 0.1019
11 2.9464 0.116 2.30378 0.0907
12 2.6416 0.104 2.05232 0.0808
13 2.3368 0.092 1.8288 0.072
14 2.032 0.08 1.62814 0.0641
15 1.8288 0.072 1.45034 0.0571
16 1.6256 0.064 1.29032 0.0508
17 1.4224 0.056 1.15062 0.0453

 

Wire Number Standard Wire Guage Standard Wire Guage American Wire Guage American Wire Guage
(Gauge) SWG (mm) SWG (inches) (AWG or B&S) mm (AWG or B&S) inches
18 1.2192 0.048 1.02362 0.0403
19 1.016 0.04 0.91186 0.0359
20 0.9144 0.036 0.8128 0.032
21 0.8128 0.032 0.7239 0.0285
22 0.7112 0.028 0.64262 0.0253
23 0.6096 0.024 0.57404 0.0226
24 0.5588 0.022 0.51054 0.0201
25 0.508 0.02 0.45466 0.0179
26 0.4572 0.018 0.40386 0.0159
27 0.41656 0.0164 0.36068 0.0142
28 0.37592 0.0148 0.32004 0.0126
29 0.34544 0.0136 0.28702 0.0113

 

Wire Number Standard Wire Guage Standard Wire Guage American Wire Guage American Wire Guage
(Gauge) SWG (mm) SWG (inches) (AWG or B&S) mm (AWG or B&S) inches
30 0.31496 0.0124 0.254 0.01
31 0.29464 0.0116 0.22606 0.0089
32 0.27432 0.0108 0.2032 0.008
33 0.254 0.01 0.18034 0.0071
34 0.23368 0.0092 0.16002 0.0063
35 0.21336 0.0084 0.14224 0.0056
36 0.19304 0.0076 0.127 0.005
37 0.17272 0.0068 0.1143 0.0045
38 0.1524 0.006 0.1016 0.004
39 0.13208 0.0052 0.0889 0.0035
40 0.12192 0.0048 0.07874 0.0031
41 0.11176 0.0044 0.07112 0.0028

 

Wire Number Standard Wire Guage Standard Wire Guage American Wire Guage American Wire Guage
(Gauge) SWG (mm) SWG (inches) (AWG or B&S) mm (AWG or B&S) inches
42 0.1016 0.004 0.0635 0.0025
43 0.09144 0.0036 0.05588 0.0022
44 0.08128 0.0032 0.0508 0.002
45 0.07112 0.0028 0.04572 0.0018
46 0.06096 0.0024 0.04064 0.0016
47 0.0508 0.002 0.03556 0.0014
48 0.04064 0.0016 0.03048 0.0012
49 0.03048 0.0012 0.02794 0.0011
50 0.0254 0.001 0.0254 0.001
51     0.022352 0.00088
52     0.019812 0.00078
53     0.01778 0.0007
54     0.015748 0.00062
55     0.01397 0.00055
56     0.012446 0.00049

 

 



Note: Due to the fact that fastening applications differ greatly, the above information is for guidance only and is correct to the best of our knowledge. The customer must satisfy themselves with the performance of the fastener and validity of the data. TR Fastenings will not be held responsible for any failure that may occur from the use of this information.