Wire Gauge Conversion Chart

S.W.G. Wire Number
 A.W.G.    
or B&S   
A.W.G. Metric  

(Inches)
(Gauge)
(Inches)
(MM)
0.300
1
0.289297
7,348
0.276
2
0.257627
6,543
0.252
3
0.229423
5,827
0.232
4
0.2043
5,189
0.2120
5
0.1819
4,621
0.1920
6
0.1620
4,115
0.1760
7
0.1443
3,665
0.1600
8
0.1285
3,264
0.1440
9
0.1144
2,906
0.1280 
10
0.1019
2,588
0.1160
11
0.0907
2,304
0.1040
12
0.0808
2,052
S.W.G. Wire Number
A.W.G. 
or B&S 
A.W.G. Metric
0.0920
13
0.0720
1,829
0.0800
14
0.0641
1,628
0.0720
15
0.0571
1,450
0.0640
16
0.0508
1,291
0.0560
17
0.0453
1,150
0.0480
18
0.0403
1,024
0.0400
19
0.0359
0,9119
0.0360
20
0.0320
0,8128
0.0320
21
0.0285
0,7239
0.0280
22
0,6426
0,6426
0.0240
23
0.0226
0,5740
0.0220
24
0.0201
0,5106
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
    
Wire Gauges Arranged In Columns As Follows:

AWG = American Wire Gauge

B&S = Brown & Sharpe

SWG= Imperial Standard Wire Gauge -(British legal standard)

Values are stated in approximate decimals of an inch excluding the metric numbers.
This Conversion Table converts Metric- Millimetres mm to Imperial and other units of measure