How to convert a decimal to a fraction
- Count the digits after the decimal point. 0.375 has three.
- Write the digits over 1 followed by that many zeros: 375/1000.
- Simplify by dividing by the greatest common factor (125): 3/8.
Repeating decimals
A decimal such as 0.3333… goes on forever, so it can't be typed exactly. Enter several digits (for example 0.333333) and the converter will suggest the simple fraction it most likely represents — here, 1/3.
Fractions for measuring
Tape measures and drill bits use sixteenths, thirty-seconds and sixty-fourths of an inch. The "nearest 1/16" result rounds your decimal to the closest mark you can actually measure.
Common fractions as decimals
| Fraction | Decimal | Percent |
|---|---|---|
| 1/2 | 0.5 | 50% |
| 1/3 | 0.333333 | 33.3333% |
| 2/3 | 0.666667 | 66.6667% |
| 1/4 | 0.25 | 25% |
| 3/4 | 0.75 | 75% |
| 1/5 | 0.2 | 20% |
| 2/5 | 0.4 | 40% |
| 3/5 | 0.6 | 60% |
| 4/5 | 0.8 | 80% |
| 1/8 | 0.125 | 12.5% |
| 3/8 | 0.375 | 37.5% |
| 5/8 | 0.625 | 62.5% |
| 7/8 | 0.875 | 87.5% |
| 1/16 | 0.0625 | 6.25% |
| 3/16 | 0.1875 | 18.75% |
| 5/16 | 0.3125 | 31.25% |
| 7/16 | 0.4375 | 43.75% |
| 9/16 | 0.5625 | 56.25% |
| 11/16 | 0.6875 | 68.75% |
| 13/16 | 0.8125 | 81.25% |
| 15/16 | 0.9375 | 93.75% |