Wire Gauge (Wire No.)


Wire Gauge (Wire No.)

Note 1)

SWG=British Imperial Standard Wire Gauge
BWG=Birmingham (or Stubs Iron) Wire Gauge

Gauge Nos. and diameters below are quoted from American Iron and Steel Institute’s “Steel Products Manual 1963” translated and published in Japan. The wire diameter of each gauge is principally shown by inches, which is converted to the metric size shown in the table.

 

Wire Gauge S. W. G.
Diameter Sectional Area

mm
Length of 1 kg Wire

m
mm in.
0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24
8.23

7.62

7.01

6.40

5.893

5.385

4.877

4.470

4.064

3.658

3.251

2.946

2.642

2.337

2.032

1.829

1.626

1.422

1.219

1.016

0.9144

0.8128

0.7112

0.6096

0.5588
0.324

0.300

0.276

0.252

0.232

0.212

0.192

0.176

0.160

0.144

0.128

0.116

0.104

0.092

0.080

0.072

0.064

0.056

0.048

0.040

0.036

0.032

0.028

0.024

0.022
53.197

45.604

38.595

32.170

27.275

22.775

18.680

15.693

12.972

10.509

8.301

6.816

5.482

4.290

3.243

2.627

2.076

1.583

1.167

0.8107

0.6567

0.5189

0.3973

0.2919

0.2452
2.39

2.79

3.29

3.96

4.67

5.58

6.81

8.11

9.81

12.11

15.33

18.67

23.21

29.66

39.23

48.43

61.26

80.37

109.00

157.20

193.70

245.10

320.20

435.90

518.80

 

Wire Gauge S. W. G.
Diameter Sectional Area

mm
Length of 1 kg Wire

m
mm in.
25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50
0.5080

0.4572

0.4166

0.3759

0.3454

0.3150

0.2946

0.2743

0.2540

0.2337

0.2134

0.1930

0.1727

0.1524

0.1321

0.1219

0.1118

0.1016

0.0914

0.0813

0.0711

0.0610

0.0508

0.0406

0.0305

0.0254
0.020

0.018

0.0164

0.0148

0.0136

0.0124

0.0116

0.0108

0.0100

0.0092

0.0084

0.0076

0.0068

0.0060

0.0052

0.0048

0.0044

0.0040

0.0036

0.0032

0.0028

0.0024

0.0020

0.0016

0.0012

0.0010
0.2027

0.1642

0.1363

0.1110

0.0937

0.0780

0.0682

0.0591

0.0507

0.0429

0.0358

0.0293

0.0234

0.0182

0.0137

0.0117

0.0098

0.0081

0.0066

0.0052

0.0040

0.0029

0.0020

0.0013

0.0007

0.0005
627.60

774.80

933.40

1,146.00

1,358.00

1,631.00

1,865.00

2,153.00

2,509.00

2,965.00

3,553.00

4,347.00

5,437.00

6,990.00

9,287.00

10,900.00

12,980.00

15,720.00

19,370.00

24,460.00

31,810.00

43,870.00

63,610.00

97,860.00

181,800.00

254,500.00

 

Wire Gauge B. W. G.
Diameter Sectional Area

mm
Length of 1 kg Wire

m
mm in.
0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36
8.64

7.62

7.21

6.58

6.045

5.588

5.156

4.572

4.191

3.759

3.404

3.048

2.769

2.413

2.108

1.829

1.651

1.473

1.245

1.067

0.8839

0.8128

0.7112

0.6350

0.5588

0.5080

0.4572

0.4064

0.3556

0.3302

0.3048

0.2540

0.2286

0.2032

0.1778

0.1270

0.1016
0.340

0.300

0.284

0.259

0.238

0.220

0.203

0.180

0.165

0.148

0.134

0.120

0.109

0.095

0.083

0.072

0.065

0.058

0.049

0.042

0.035

0.032

0.028

0.025

0.022

0.020

0.018

0.016

0.014

0.013

0.012

0.010

0.009

0.008

0.007

0.005

0.004
58.630

45.604

40.828

34.005

28.700

24.525

20.879

16.417

13.795

11.098

9.100

7.297

6.022

4.572

3.490

2.627

2.141

1.704

1.217

0.894

0.614

0.5189

0.3973

0.3167

0.2452

0.2027

0.1642

0.1297

0.0993

0.0856

0.0730

0.0507

0.0410

0.0324

0.0248

0.0127

0.0081
2.17

2.79

3.12

3.74

4.43

5.19

6.09

7.74

9.22

11.46

13.97

17.43

21.12

28.09

36.46

48.43

59.42

74.66

104.50

141.30

207.20

245.10

320.20

401.70

518.80

627.60

774.80

980.90

1,281.90

1,486.00

1,743.00

2,509.00

3,103.00

3,923.00

5,130.00

10,020.00

15,720.00

1ton/in.=1.5754kg/mm2  1lbs/in2=0.000703kg/mm2  0.9842T=1Long T.
1T=10160Long T.  1Long T.=2240lbs

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