Metric/US Gauge/Imperial Conversion Chart
mm
1.0
1.2
1.6
2.0
2.4
3.2
4.0
5.0
6.0
8.0
10
12
16
20
25
USA
18g
16g
14g
12g
10g
8g
6g
4g
2g
0g
00g
-
-
-
-
IMP
-
-
1/16
-
3/32
1/8
5/32
3/16
1/4
9/32
7/16
1/2
5/8
3/4
1