1/8
1/4
3/8
1/2
FRACTIONS OF
ONE INCH
DECIMAL
EQUIV.
(in)
METRIC
EQUIV.
(mm)
8
ths
16
ths
32
ths
64
ths
1 0.015625 0.396875
1 2 0.031250 0.793750
0.039370 1.000000
3 0.046875 1.190625
1 2 4 0.062500 1.587500
5 0.078125 1.984375
0.078740 2.000000
3 6 0.093750 2.381250
7 0.109375 2.778125
0.118110 3.000000
1 2 4 8 0.125000 3.175000
9 0.140625 3.571875
5 10 0.156250 3.968750
0.157480 4.000000
11 0.171875 4.365625
3 6 12 0.187500 4.762500
0.196850 5.000000
13 0.203125 5.159375
7 14 0.218750 5.556250
15 0.234375 5.953125
0.236220 6.000000
2 4 8 16 0.250000 6.350000
17 0.265625 6.746875
0.275591 7.000000
9 18 0.281250 7.143750
19 0.296875 7.540625
5 10 20 0.312500 7.937500
0.314961 8.000000
21 0.328125 8.334375
11 22 0.343750 8.731250
0.354331 9.000000
23 0.359375 9.128125
3 6 12 24 0.375000 9.525000
25 0.390625 9.921875
0.393701 10.000000
13 26 0.406250 10.318750
27 0.421875 10.715625
0.433071 11.000000
7 14 28 0.437500 11.112500
29 0.453125 11.509375
15 30 0.468750 11.906250
0.472441 12.000000
31 0.484375 12.303125
4 8 16 32 0.500000 12.700000
5/8
3/4
7/8
1
FRACTIONS OF
ONE INCH
DECIMAL
EQUIV.
(in)
METRIC
EQUIV.
(mm)
8
ths
16
ths
32
ths
64
ths
33 0.515625 13.096875
0.511811 13.000000
17 34 0.531250 13.493750
35 0.546875 13.890625
0.551181 14.000000
9 18 36 0.562500 14.287500
37 0.578125 14.684375
0.590551 15.000000
19 38 0.593750 15.081250
39 0.609375 15.478125
5 10 20 40 0.625000 15.875000
0.629921 16.000000
41 0.640625 16.271875
21 42 0.656250 16.668750
0.669291 17.000000
43 0.671875 17.065625
11 22 44 0.687500 17.462500
45 0.703125 17.859375
0.708661 18.000000
23 46 0.718750 18.256250
47 0.734375 18.653125
0.748031 19.000000
6 12 24 48 0.750000 19.050000
49 0.765625 19.446875
25 50 0.781250 19.843750
0.787402 20.000000
51 0.796875 20.240625
13 26 52 0.812500 20.637500
0.826772 21.000000
53 0.828125 21.034375
27 54 0.843750 21.431250
55 0.859375 21.828125
0.866142 22.000000
7 14 28 56 0.875000 22.225000
57 0.890625 22.621875
0.905512 23.000000
29 58 0.906250 23.018750
59 0.921875 23.415625
15 30 60 0.937500 23.812500
0.944882 24.000000
61 0.953125 24.209375
31 62 0.968750 24.606250
0.984252 25.000000
63 0.984375 25.003125
8 16 32 64 1.000000 25.400000