Wire Gauge Conversion Chart
Published: May 21, 2008

Wire Gauge Conversion Chart

 

Wire Gauges Arranged In Columns As Follows:

AWG= American Wire Gauge
B&S= Brown & Sharpe
SWG= Imperial Standard Wire Gauge-(British legal standard)

S.W.G.

Wire Number

A.W.G. or B&S

A.W.G. Metric

(Inches)

(Gauge)

(Inches)

(MM)

0.0200

25

0.0179

0,4547

0.0180

26

0.0159

0,4038

0.0164

27

0.0142

0,3606

0.0148

28

0.0126

0,3200

0.0136

29

0.0113

0,2870

0.0124

30

0.0100

0,2540

0.0116

31

0.0089

0,2261

0.0108

32

0.0080

0,2032

0.0100

33

0.0071

0,1803

0.0092

34

0.0063

0,1601

0.0084

35

0.0056

0,1422

0.0076

36

0.0050

0,1270

0.0068

37

0.0045

0,1143

0.0060

38

0.0040

0,1016

0.0052

39

0.0035

0,0889

0.0048

40

0.0031

0,0787

0.0044

41

0.0028

0,0711

0.0040

42

0.0025

0,0635

0.0036

43

0.0022

0,0559

0.0032

44

0.0020

0,0508

0.0028

45

0.0018

0,0457

0.0024

46

0.0016

0,0406

0.0020

47

0.0014

0,0350

0.0016

48

0.0012

0.0305

0.0012

49

0.0011

0,0279

0.0010

50

0.0010

0,0254

 

Comment:
Values are stated in approximate decimals of an inch excluding the metric numbers. As a number of gauges are in use for various shapes and metals, it is advisable to state the thickness in thousands when specifying in gauge number. Metric wire gauge is 10 times the diameter in millimeters.