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713.356.3500

Decimal Equivalent Charts
Eighths of an Inch
Diameter Decimal Millimeters
1/8 0.125 3.175
1/4 0.250 6.350
3/8 0.375 9.525
1/2 0.500 12.700
5/8 0.625 15.875
3/4 0.750 19.050
7/8 0.875 22.225
1 1.000 25.400
Sixteenths of an Inch
Diameter Decimal Millimeters
1/16 0.063 1.588
3/16 0.188 4.762
5/16 0.313 7.937
7/16 0.438 11.112
9/16 0.563 14.287
11/16 0.688 17.462
13/16 0.813 20.637
15/16 0.938 23.812
Thirty-Seconds of an Inch
Diameter Decimal Millimeters
1/32 0.031 0.794
3/32 0.094 2.381
5/32 0.156 3.969
7/32 0.219 5.556
9/32 0.281 7.144
11/32 0.344 8.731
13/32 0.406 10.319
15/32 0.469 11.906
17/32 0.531 13.494
19/32 0.594 15.081
Sixty-Fourths of an Inch
Diameter Decimal Millimeters
1/64 0.016 0.397
3/64 0.047 1.191
5/64 0.078 1.984
7/64 0.109 2.778
9/64 0.141 3.572
11/64 0.172 4.366
13/64 0.203 5.159
15/64 0.234 5.953
17/64 0.265 6.747
19/64 0.297 7.540
21/64 0.328 8.334
23/64 0.359 9.128
25/64 0.390 9.922
27/64 0.421 10.715
29/64 0.453 11.509
31/64 0.484 12.303
33/64 0.515 13.096
35/64 0.546 13.890
37/64 0.577 14.684
39/64 0.609 15.478
41/64 0.640 16.272
43/64 0.671 17.065
45/64 0.702 17.859
47/64 0.733 18.653
49/64 0.765 19.447
51/64 0.796 20.240
53/64 0.827 21.034
55/64 0.858 21.828
57/64 0.889 22.621
59/64 0.921 23.415
61/64 0.952 24.209
63/64 0.983 25.003