FRACTIONAL INCHES CONVERTED TO DECIMAL INCHES AND MILLIMETERS
FRACTION OF INCH
DECIMAL OF INCH
DECIMAL MILLIMETERS
1/64
.01565
0.39688
1/32
.01325
0.79375
3/64
.046875
1.19063
1/16
.0625
1.58750
5/64
.078125
1.98438
3/32
.09375
2.38125
7/64
.109375
2.77813
5/32
.15625
3.96876
9/64
.146025
3.57188
11/64
.171875
4.36563
3/16
.1875
4.76251
13/64
.203125
5.15939
7/32
.21875
5.55626
15/64
.234375
5.15939
1/4
.250
6.35001
17/64
.265625
6.74689
9/32
.28125
7.14376
19/64
.296875
7.54064
5/16
.3125
7.93752
21/64
.328125
8.33439
11/32
.34375
8.73127
23/64
.359375
9.12814
25/64
.390625
9.92189
13/32
.40625
10.31877
27/64
.421875
10.71565
7/16
.4375
11.11252
29/64
.453125
11.50940
15/32
.46875
11.90627
31/64
.484375
12.30315
1/2
.500
12.7003
33/64
.515625
13.09690
17/32
.53125
13.49378
35/64
.515625
13.09690
9/16
.5625
14.28753
37/64
.578125
14.68440
19/32
.59375
15.08128
39/64
.609375
15.47816
5/8
.625
15.87503
41/64
.640625
16.27191
21/32
.65625
16.66878
43/64
.671875
17.06566
11/64
.6875
17.46253
45/64
.703125
17.85941
23/32
.71875
18.25629
47/64
.7343475
19.44691
25/32
.78125
19.84379
51/64
.796875
20.24067
13/16
.8125
20.63754
53/64
.828125
21.03442
27/32
.84375
21.43129
55/64
.859375
21.82817
7/8
.875
22.22504
57/64
.890625
22.62192
29/32
.90625
23.01880
59/64
.921875
23.41567
15/16
.9375
23.81255
61/64
.953125
24.20942
31/32
.96875
24.60630
63/64
.984375
25.00318
1
1.000
25.40006
* The tolerances for flats apply to thickness as well as width.