Metric to Imperial Tool Conversion

The following table is a conversion of Metric to Imperial tool sizes used with Spanners/Sockets.  These are approximate conversions.

metric (mm) imperial (1/32)
3 1/8
4 5/32
5 3/16
6 1/4
7 9/32
8 5/16
9 11/32
10 13/32
11 7/16
12 15/32
13 1/2
14 9/16
15 19/32
16 5/8
17 21/32 (11/16)
18 23/32
19 3/4
20 25/32
21 27/32 (13/16)
22 7/8
23 29/32
24 15/16
25 1

 


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