Wire Gauge Conversion Table

The thickness of jewelry wire (as is other wire) is measured in "Wire Gauge". The smaller the wire gauge number the larger the wire.

We provide this table as a quick reference to help everyone convert the "Wire Gauge" sizes in to more common measurement units.

Conversion of wire gauges to millimeters and inches

 

Wire 

Inch

Millimeter

Inch

Wire

Inch

Millimeter

Inch

Gauge

(Decimal)

(mm)

(Fraction)

Gauge

(Decimal)

(mm)

(Fraction)

1

0.289

7.348

.

15

0.057

1.449

.

2

0.258

6.543

.

16

0.051

1.291

.

.

0.25

6.35

1/4

.

0.047

1.191

3/64

.

0.234

5.953

15/64

17

0.045

1.149

.

3

0.229

5.827

.

18

0.04

1.024

.

.

0.219

5.556

7/32

19

0.036

0.912

.

4

0.204

5.189

.

20

0.032

0.812

.

.

0.203

5.154

11/64

.

0.031

0.795

1/32

.

0.188

4.762

3/16

21

0.028

0.723

.

5

0.182

4.621

.

22

0.025

0.644

.

.

0.172

4.366

11/64

23

0.023

0.573

.

6

0.162

4.115

.

24

0.02

0.511

.

.

0.156

3.969

5/32

25

0.018

0.455

.

7

0.144

3.664

.

26

0.016

0.405

.

.

0.141

3.572

9/64

.

0.016

0.396

1/64

8

0.128

3.263

.

27

0.014

0.36

.

.

0.125

3.175

1/8

28

0.013

0.321

.

9

0.114

2.906

.

29

0.011

0.286

.

.

0.109

2.778

7/64

30

0.01

0.255

.

10

0.102

2.588

.

31

0.0089

0.226

.

.

0.094

2.381

3/32

32

0.008

0.2

.

11

0.091

2.304

.

33

0.0071

0.18

.

12

0.081

2.052

.

34

0.0063

0.16

.

.

0.078

1.984

5/64

35

0.0056

0.142

.

13

0.072

1.828

.

36

0.005

0.13

.

14

0.064

1.628

.

37

0.0045

0.114

.

.

0.063

1.588

1/16

38

0.004

0.1

.

 

 

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