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Fractions, Decimals & Millimeter Conversion Chart

Fractions of an Inch Equivalents
64 32 16 8 4 2 Decimal MM
1 - - - - - 0.016 0.40
2 1 - - - - 0.031 0.79
3 - - - - - 0.047 1.19
4 2 1 - - - 0.063 1.60
5 - - - - - 0.047 1.19
6 3 - - - - 0.063 1.60
7 - - - - - 0.109 1.98
8 4 2 1 - - 0.125 2.39
9 - - - - - 0.140 2.77
10 5 - - - - 0.156 3.18
11 - - - - - 0.172 4.37
12 6 3 - - - 0.187 4.76
13 - - - - - 0.203 5.16
14 7 - - - - 0.219 5.56
15 - - - - - 0.234 5.95
16 8 4 2 1 - 0.250 6.35
17 - - - - - 0.266 6.75
18 9 - - - - 0.281 7.14
19 - - - - - 0.297 7.54
20 10 5 - - - 0.313 7.94
21 - - - - - 0.328 8.33
22 11 - - - - 0.344 8.73
23 - - - - - 0.359 9.13
24 12 6 3 - - 0.375 9.53
25 - - - - - 0.391 9.93
26 13 - - - - 0.406 10.32
27 - - - - - 0.422 10.72
28 14 7 - - - 0.437 11.11
29 - - - - - 0.453 11.51
30 15 - - - - 0.469 11.91
31 - - - - - 0.484 12.30
32 16 8 4 2 1 0.500 12.70
33 - - - - - 0.516 13.10
34 17 - - - - 0.531 13.49
35 - - - - - 0.547 13.89
36 18 9 - - - 0.563 14.29
37 - - - - - 0.578 14.68
38 19 - - - - 0.594 15.08
39 - - - - - 0.609 15.48
40 20 10 5 - - 0.625 15.88
41 - - - - - 0.641 16.27
42 21 - - - - 0.656 16.67
43 - - - - - 0.672 17.07
44 22 11 - - - 0.687 17.46
45 - - - - - 0.703 17.86
46 23 - - - - 0.719 18.26
47 - - - - - 0.734 18.65
48 24 12 6 3 - 0.750 19.05
49 - - - - - 0.766 19.45
50 25 - - - - 0.781 19.84
51 - - - - - 0.797 20.24
52 26 13 - - - 0.813 20.64
53 - - - - - 0.828 21.03
54 27 - - - - 0.844 21.43
55 - - - - - 0.859 21.83
56 28 14 7 - - 0.875 22.23
57 - - - - - 0.891 22.62
58 29 - - - - 0.906 23.02
59 - - - - - 0.922 23.42
60 30 15 - - - 0.937 23.81
61 - - - - - 0.953 24.21
62 31 - - - - 0.969 24.61
63 - - - - - 0.984 25.00
64 32 16 8 4 2 1.000 25.40

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