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Engineering - Design tools - Convert mm / swg











Trans-tronic Ltd

Trans-tronic ltd Manufactures of transformers and wound components

Convert wire diameter from mm / SWG


mm to swg swg to mm


Row number Standard wire gauge (swg) SWG diameter (mm)
1 50 0.0254
2 49 0.0305
3 48 0.0406
4 47 0.0508
5 46 0.061
6 45 0.0711
7 44 0.0813
8 43 0.0914
9 42 0.1016
10 41 0.1118
11 40 0.1219
12 39 0.1321
13 38 0.1524
14 37 0.1727
15 36 0.193
16 35 0.2134
17 34 0.2337
18 33 0.254
19 32 0.2743
20 31 0.2946
21 30 0.315
22 29 0.3454
23 28 0.3759
24 27 0.4166
25 26 0.4572
26 25 0.508
27 24 0.5588
28 23 0.6096
29 22 0.7112
30 21 0.8128
31 20 0.9144
32 19 1.016
33 18 1.219
34 17 1.422
35 16 1.626
36 15 1.829
37 14 2.032
38 13 2.337
39 12 2.642
40 11 2.946
41 10 3.251
42 9 3.658
43 8 4.064
44 7 4.47
45 6 4.877