Conversion Tables

Inches to Millimeters:

Inches Millimeters
1/16 in. 1.5mm
1/8 in. 3mm
1/4 in 6mm
3/8 in 9mm
1/2 in 12mm
5/8 in 15mm
3/4 in 18.5mm
7/8 in 22mm
1 in 25mm

Inches and Millimeters Comparison:

Please note that this is a close approximation.  Screen resolution and monitor size will affect how you view the chart.

Wire Gauge to Inches and Millimeters Conversion Chart:

Gauge Inches Millimeters
10 0.102 2.59
11 0.091 2.31
12 0.081 2.06
13 0.072 1.83
14 0.064 1.63
15 0.057 1.45
16 0.052 1.32
17 0.045 1.14
18 0.04 1.02
19 0.036 0.91
20 0.032 0.81
21 0.028 0.71
22 0.025 0.64
23 0.023 0.58
24 0.02 0.51
25 0.0179 0.455
26 0.0159 0.404
27 0.0142 0.361
28 0.0126 0.32
29 0.0113 0.287
30 0.01 0.25
31 0.0089 0.226
32 0.008 0.2
33 0.0071 0.18
34 0.0063 0.16
35 0.0056 0.142
36 0.005 0.13
37 0.0045 0.114
38 0.004 0.1