Metric and Decimal Equivalents of Fractions of an Inch

Inches

mm

1/64

0.015

0.3968

1/32

0.031

0.7937

3/64

0.047

1.1906

1/16

0.063

1.5876

5/64

0.078

1.9843

3/32

0.094

2.3812

7/64

0.109

2.7780

1/8

0.125

3.1749

9/64

0.141

3.5718

5/32

0.156

3.9686

11/64

0.172

4.3655

3/16

0.188

4.7624

13/64

0.203

5.1592

7/32

0.219

5.5561

15/64

0.234

5.9530

1/4

0.250

6.3498

17/64

0.266

6.7467

9/32

0.281

7.1436

19/64

0.297

7.5404

5/16

0.313

7.9373

21/64

0.328

8.3342

11/32

0.344

8.7310

13/64

0.359

9.1279

3/8

0.375

9.5248

25/64

0.391

9.9216

13/32

0.406

10.3185

27/64

0.422

10.7154

7/16

0.438

11.1122

29/64

0.453

11.5091

15/32

0.469

11.9060

31/64

0.484

12.3029

1/2

0.500

12.6997

inches

mm

33/64

0.516

13.0966

17/32

0.531

13.4934

35/64

0.547

13.8903

9/16

0.563

14.2872

37/64

0.578

14.6841

19/32

0.594

15.0809

39/64

0.609

15.4778

5/8

0.625

15.8747

41/64

0.641

16.2715

21/32

0.656

16.6684

43/64

0.672

17.0653

11/16

0.688

17.4621

45/64

0.703

17.8590

23/32

0.719

18.2559

47/64

0.734

18.6527

3/4

0.750

19.0496

49/64

0.766

19.4465

25/32

0.781

19.8433

51/64

0.797

20.2402

13/16

0.813

20.6371

53/64

0.828

21.0339

27/32

0.844

21.4308

55/64

0.859

21.8277

7/8

0.875

22.2245

57/64

0.891

22.6214

29/32

0.906

23.0183

59/64

0.922

23.4151

15/16

0.938

23.8120

61/64

0.953

24.2089

31/32

0.969

24.6057

63/64

0.984

25.0026

1/1

1.000

25.3995

Wire cross sections

AWG

mm2

20

0,519

18

0,823

16

1,31

14

2,08

12

3,31

AWG

mm2

10

5,26

8

8,367

6

13,30

4

21,15

2

33,62

AWG

mm2

1

42,41

1/0

53,49

2/0

67,43

3/0

85,01

4/0

107,2

Common Gauge series used for Sheet thickness and Wire

Name

Abbreviation

American Wire Gauge

AWG

Birmingham Wire Gauge

BWG

Brown and Sharp

(identical to AWG)

B&S

Galvanized Iron

GSG

Name Abbreviation

Standard Wire Gauge (British)

SWG

Manufacturer’s Standard (U. S.)

MSG

U. S. Standard Plate

USC

Zinc (American Zinc Gauge)

AZG

Thickness in mm

Gauge

No.

AI(U. S.)

Copper

Brass

B&S

AWG

Galv

Iron

GSG

Al(U K ) SWG

Steel

MSG

Stainless Steel Sheet USG

Strip

BWG

Zinc

AZG

7/0

12,7

6/0

11,8

5/0

11,0

4/0

10,2

3/0

9,4

2/0

8,8

1/0

8,2

1

7,34

7,62

7,14

2

6,55

7,01

6,75

3

5,82

6,40

6,07

6,35

0,15

4

5,18

5,89

5,69

5,95

0,20

5

4,62

5,38

5,31

5,56

0,25

6

4,11

4,88

4,93

5,16

0,30

7

3,66

4,47

4,55

4,76

4,57

0,36

8

3,25

4,27

4,06

4,17

4,37

4,19

0,41

9

2,90

3,89

3,66

3,78

3,97

3,76

0,46

10

2,59

3,50

3,25

3,40

3,57

3,40

0,51

11

2,31

3,18

2,95

3,05

3,18

3,05

0,61

12

2,06

2,79

2,64

2,67

2,78

2,77

0,71

13

1,83

2,41

2,34

2,29

2,38

2,41

0,81

14

1,63

2,03

2,03

1,90

1,98

2,11

0,91

15

1,45

1,80

1,83

1,70

1,79

1,83

1,02

16

1,30

1,63

1,63

1,52

1,59

1,65

1,14

17

1,14

1,47

1,42

1,37

1,42

1,47

1,27

18

1,02

1,32

1,22

1,22

1,27

1,24

1,40

19

0,91

1,17

1,02

1,07

1,11

1,07

1,52

20

0,81

1,02

0,91

0,91

0,95

0,89

1,78

21

0,71

0,94

0,81

0,84

0,87

0,81

2,03

22

0,64

0,86

0,71

0,76

0,79

0,71

2,29

23

0,58

0,79

0,61

0,69

0,71

0,64

2,54

24

0,51

0,71

0,56

0,61

0,64

0,56

3,18

25

0,46

0,64

0,51

0,53

0,56

0,51

6,35