Fraction/Decimal Chart
Here is a chart of some commonly-used fractions and their decimal equivalents.
These kind of fractions are often used for sizes of screws, nails and thicknesses of metal etc, in inches.
I have highlighted the simplest fraction, which is the one you should use.
Example: You would not talk about a 2/16" drill bit, instead you would say 1/8"
If you read along each row you can see equivalent fractions, such as 4/64 = 2/32 = 1/16
| 1/64ths |
1/32nds |
1/16ths |
1/8ths |
1/4s |
1/2s |
Decimal |
mm * |
| 1/64 |
|
|
|
|
|
0.015625 |
0.397 |
| 2/64 |
1/32 |
|
|
|
|
0.03125 |
0.794 |
| 3/64 |
|
|
|
|
|
0.046875 |
1.191 |
| 4/64 |
2/32 |
1/16 |
|
|
|
0.0625 |
1.588 |
| 5/64 |
|
|
|
|
|
0.078125 |
1.984 |
| 6/64 |
3/32 |
|
|
|
|
0.09375 |
2.381 |
| 7/64 |
|
|
|
|
|
0.109375 |
2.778 |
| 8/64 |
4/32 |
2/16 |
1/8 |
|
|
0.125 |
3.175 |
| 9/64 |
|
|
|
|
|
0.140625 |
3.572 |
| 10/64 |
5/32 |
|
|
|
|
0.15625 |
3.969 |
| 11/64 |
|
|
|
|
|
0.171875 |
4.366 |
| 12/64 |
6/32 |
3/16 |
|
|
|
0.1875 |
4.763 |
| 13/64 |
|
|
|
|
|
0.203125 |
5.159 |
| 14/64 |
7/32 |
|
|
|
|
0.21875 |
5.556 |
| 15/64 |
|
|
|
|
|
0.234375 |
5.953 |
| 16/64 |
8/32 |
4/16 |
2/8 |
1/4 |
|
0.25 |
6.35 |
| 17/64 |
|
|
|
|
|
0.265625 |
6.747 |
| 18/64 |
9/32 |
|
|
|
|
0.28125 |
7.144 |
| 19/64 |
|
|
|
|
|
0.296875 |
7.541 |
| 20/64 |
10/32 |
5/16 |
|
|
|
0.3125 |
7.938 |
| 21/64 |
|
|
|
|
|
0.328125 |
8.334 |
| 22/64 |
11/32 |
|
|
|
|
0.34375 |
8.731 |
| 23/64 |
|
|
|
|
|
0.359375 |
9.128 |
| 24/64 |
12/32 |
6/16 |
3/8 |
|
|
0.375 |
9.525 |
| 25/64 |
|
|
|
|
|
0.390625 |
9.922 |
| 26/64 |
13/32 |
|
|
|
|
0.40625 |
10.319 |
| 27/64 |
|
|
|
|
|
0.421875 |
10.716 |
| 28/64 |
14/32 |
7/16 |
|
|
|
0.4375 |
11.113 |
| 29/64 |
|
|
|
|
|
0.453125 |
11.509 |
| 30/64 |
15/32 |
|
|
|
|
0.46875 |
11.906 |
| 31/64 |
|
|
|
|
|
0.484375 |
12.303 |
| 32/64 |
16/32 |
8/16 |
4/8 |
2/4 |
1/2 |
0.5 |
12.7 |
| 33/64 |
|
|
|
|
|
0.515625 |
13.097 |
| 34/64 |
17/32 |
|
|
|
|
0.53125 |
13.494 |
| 35/64 |
|
|
|
|
|
0.546875 |
13.891 |
| 36/64 |
18/32 |
9/16 |
|
|
|
0.5625 |
14.288 |
| 37/64 |
|
|
|
|
|
0.578125 |
14.684 |
| 38/64 |
19/32 |
|
|
|
|
0.59375 |
15.081 |
| 39/64 |
|
|
|
|
|
0.609375 |
15.478 |
| 40/64 |
20/32 |
10/16 |
5/8 |
|
|
0.625 |
15.875 |
| 41/64 |
|
|
|
|
|
0.640625 |
16.272 |
| 42/64 |
21/32 |
|
|
|
|
0.65625 |
16.669 |
| 43/64 |
|
|
|
|
|
0.671875 |
17.066 |
| 44/64 |
22/32 |
11/16 |
|
|
|
0.6875 |
17.463 |
| 45/64 |
|
|
|
|
|
0.703125 |
17.859 |
| 46/64 |
23/32 |
|
|
|
|
0.71875 |
18.256 |
| 47/64 |
|
|
|
|
|
0.734375 |
18.653 |
| 48/64 |
24/32 |
12/16 |
6/8 |
3/4 |
|
0.75 |
19.05 |
| 49/64 |
|
|
|
|
|
0.765625 |
19.447 |
| 50/64 |
25/32 |
|
|
|
|
0.78125 |
19.844 |
| 51/64 |
|
|
|
|
|
0.796875 |
20.241 |
| 52/64 |
26/32 |
13/16 |
|
|
|
0.8125 |
20.638 |
| 53/64 |
|
|
|
|
|
0.828125 |
21.034 |
| 54/64 |
27/32 |
|
|
|
|
0.84375 |
21.431 |
| 55/64 |
|
|
|
|
|
0.859375 |
21.828 |
| 56/64 |
28/32 |
14/16 |
7/8 |
|
|
0.875 |
22.225 |
| 57/64 |
|
|
|
|
|
0.890625 |
22.622 |
| 58/64 |
29/32 |
|
|
|
|
0.90625 |
23.019 |
| 59/64 |
|
|
|
|
|
0.921875 |
23.416 |
| 60/64 |
30/32 |
15/16 |
|
|
|
0.9375 |
23.813 |
| 61/64 |
|
|
|
|
|
0.953125 |
24.209 |
| 62/64 |
31/32 |
|
|
|
|
0.96875 |
24.606 |
| 63/64 |
|
|
|
|
|
0.984375 |
25.003 |
| 64/64 |
32/32 |
16/16 |
8/8 |
4/4 |
2/2 |
1 |
25.4 |
* mm: if the fraction represents inches, then the "mm" column is the equivalent size in millimeters.
|
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