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TM 9-254
4-6.
Standards of Length - Continued
Table 4-3. Conversion - Fractions of an Inch to Decimals of an Inch, and Millimeters
Fraction
Decimal
Fraction
Decimal
of inch
of inch
Millimeters
of inch
of inch
Millimeters
1/64
0.015625
0.3968
33/64
0.515625
13.0966
1/32
0.03125
0.7937
17/32
0.53125
13.4934
3/64
0.046875
1.1906
35/64
0.546875
13.8903
1/16
0.0625
1.5875
9/16
0.5625
14.2872
5/64
0.078125
1.9843
37/64
0.578125
14.6841
3/32
0.09375
2.3812
19/32
0.59375
15.0809
7/64
0.109375
2.7780
39/64
0.609375
15.4778
1/8
0.125
3.1749
5/8
0.625
15.8747
9/64
0.140625
3.5718
41/64
0.640625
16.2715
5/32
0.15625
3.9686
21/32
0.65625
16.6684
11/64
0.171875
4.3655
43/64
0.671875
17.0653
3/16
0.1875
4.7624
11/16
0.6875
17.4621
13/64
0.203125
5.1592
45/64
0.703125
17.8590
7/32
0.21875
5.5561
23/32
0.71875
18.2559
15/64
0.234375
5.9530
47/64
0.734375
18.6527
1/4
0.25
6.3498
3/4
0.75
19.0496
17/64
0.265625
6.7467
49/64
0.765625
19.4465
9/32
0.28125
7.1436
25/32
0.78125
19.8433
19/64
0.296875
7.5404
51/64
0.796875
20.2402
5/16
0.3125
7.9373
13/16
0.8125
20.6371
21/64
0.328125
8.3342
53/64
0.828125
21.0339
11/32
0.34375
8.7310
27/32
0.843750
21.4308
23/64
0.359375
9.1279
55/64
0.859375
21.8277
3/8
0.375
9.5248
7/8
0.875
22.2245
25/64
0.390625
9.9216
57/64
0.890625
22.6214
13/32
0.40625
10.3185
29/32
0.90625
23.0183
27/64
0.421875
10.7154
59/64
0.921875
23.4151
7/16
0.4375
11.1122
15/16
0.9375
23.8120
29/64
0.453125
11.5091
61/64
0.953125
24.2089
15/32
0.46875
11.9060
31/32
0.96875
24.6057
31/64
0.484375
12.3029
63/64
0.984375
25.0026
1/2
0.5
12.6997
1
1.0
25.3995
4-19
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