Gauge Conversions

Gauge Number

=

Birmingham Gauge

0
=
0.34
1
= 0.3
2
=
0.284
3
=
0.259
4
=
0.238
5
=
0.22
6
=
0.203
7
=
0.18
8
=
0.165
9
=
0.148
10
=
0.134
11
=
0.12
12
=
0.109
13
=
0.095
14
=
0.083
15
=
0.072
16
=
0.065
17
=
0.058
18
=
0.049
19
=
0.042
20
=
0.035
21
=
0.032
22
=
0.028
23
=
0.025
24
=
0.022
25
=
0.02
26
=
0.018
27
=
0.016
28
=
0.014
29
=
0.013
30
=
0.012
31
=
0.01
32
=
0.009
33
=
0.008
34
=
0.007
35
=
0.005