Decimal Conversion Factors (FRACTION/DECIMAL/METRIC CONVERSION CHART)

4th 8th 16th 32nd 64th Inches Milimeters 4th 8th 16th 32nd 64th Inches Milimeters
1/64 .016  .397 33/64 .516 13.097
1/32 .031  .794 17/32 .531 13.494
3/64 .047  1.191 35/64 .547 13.891
1/16 .063  1.588 9/16 .563 14.288
5/64 .078  1.984 37/64 .578 14.684
3/32 .094  2.381 19/32 .594 15.081
7/64 .109  2.788 39/64 .609 15.478
1/8 .125  3.175 5/8 .625 15.875
9/64 .141  3.572 41/64 .641 16.272
5/32 .156  3.969 21/32 .656 16.669
11/64 .172  4.366 43/64 .672 17.066
3/16 .188  4.762 11/16 .688 17.462
13/64 .203  5.159 45/64 .703 17.859
7/32 .219  5.556 23/32 .719 18.256
15/64 .234  5.953 47/64 .734 18.653
1/4 .250  6.350 3/4 .750 19.050
17/64 .266  6.747 49/64 .766 19.447
9/32 .281  7.144 25/32 .781 19.844
19/64 .297  7.541 51/64 .797 20.241
5/16 .313  7.938 13/16 .812 20.638
21/64 .328  8.334 53/64 .828 21.034
11/32 .344  8.731 27/32 .844 21.431
23/64 ..359  9.128 55/64 .859 21.828
3/8 .375  9.525 7/8 .875 22.225
25/64 .391  9.922 57/64 .891 22.622
13/32 .406  10.319 29/32 .906 23.019
27/64 .422  10.716 59/64 .922 23.416
7/16 .439  11.112 15/16 .938 23.812
29/64 .453  11.509 61/64 .953 24.209
15/32 .469  11.906 31/32 .969 24.606
31/64 .484  12.303 63/64 .984 25.003
1/2 .500  12.700 1 1.000 25.400