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Gauge to Inches to Millimeters Conversion Table

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Gauge to Inches to Millimeters Conversion Table
B & S Gauge
Inch (Decimal)
Millimeter (mm)
Inch (Fraction)
B &S Gauge
Inch (Decimal)
Millimeter (mm)
Inch (Fraction)
1
0.289
7.348
.
17
0.045
1.149
.
2
0.258
6.543
.
18
0.040
1.024
.
.
0.250
6.350
1/4
19
0.036
0.912
.
.
0.234
5.953
15/64
20
0.032
0.812
.
3
0.229
5.827
.
.
0.031
0.795
1/32
.
0.219
5.556
7/32
21
0.028
0.723
.
4
0.204
5.189
.
22
0.025
0.644
.
.
0.203
5.154
11/64
23
0.023
0.573
.
.
0.188
4.762
3/16
24
0.020
0.511
.
5
0.182
4.621
.
25
0.018
0.455
.
.
0.172
4.366
11/64
26
0.016
0.405
.
6
0.162
4.115
.
.
0.016
0.396
1/64
.
0.156
3.969
5/32
27
0.014
0.360
.
7
0.144
3.664
.
28
0.013
0.321
.
.
0.141
3.572
9/64
29
0.011
0.286
.
8
0.128
3.263
.
30
0.010
0.255
.
.
0.125
3.175
1/8
31
0.0089
0.226
.
9
0.114
2.906
.
32
0.0080
0.200
.
.
0.109
2.778
7/64
33
0.0071
0.180
.
10
0.102
2.588
.
34
0.0063
0.160
.
.
0.094
2.381
3/32
35
0.0056
0.142
.
11
0.091
2.304
.
36
0.0050
0.130
.
12
0.081
2.052
.
37
0.0045
0.114
.
.
0.078
1.984
5/64
38
0.0040
0.100
.
13
0.072
1.828
.
.
.
.
.
14
0.064
1.628
.
.
.
.
.
.
0.063
1.588
1/16
.
.
.
.
15
0.057
1.449
.
.
.
.
.
16
0.051
1.291
.
.
.
.
.
.
0.047
1.191
3/64
.
.
.
.

 

1 inch = 25.4 millimeters
(Example: 1.75" x 25.4 = 44.45mm)





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