0.625 as a fraction is 5/8. As a percent it is 62.5%. The fraction is in lowest terms: the numerator and denominator share no common factor other than 1.
How to convert 0.625 to a fraction
Step 1. Write 0.625 over a power of ten. It has 3 digits after the decimal point, so the denominator is 1000: 0.625 = 625/1,000.
Step 2. Find the greatest common divisor of 625 and 1,000, which is 125.
Step 3. Divide the top and bottom by 125: 625 ÷ 125 = 5 and 1,000 ÷ 125 = 8. The result is 5/8.
The denominator 8 factors into 2 × 2 × 2, so this decimal terminates, as every decimal that is written with a finite number of digits does.
0.625 compared with nearby decimals
These decimals have the same number of places as 0.625, so the same method gives their fractions:
| Decimal | Fraction | Percent |
|---|---|---|
| 0.623 | 623/1000 | 62.3% |
| 0.624 | 78/125 | 62.4% |
| 0.626 | 313/500 | 62.6% |
| 0.627 | 627/1000 | 62.7% |
Multiples of 0.625
Scaling the fraction is a quick way to check your work. Each row multiplies 0.625 (5/8) by a whole number:
| Multiple | Decimal | Fraction | Mixed number |
|---|---|---|---|
| 2 × 0.625 | 1.25 | 5/4 | 1 1/4 |
| 3 × 0.625 | 1.875 | 15/8 | 1 7/8 |
| 4 × 0.625 | 2.5 | 5/2 | 2 1/2 |
| 5 × 0.625 | 3.125 | 25/8 | 3 1/8 |
| 10 × 0.625 | 6.25 | 25/4 | 6 1/4 |
5/8 of an inch
Tape measures and drill bits use binary fractions of an inch. Since one inch is defined as exactly 25.4 millimetres, 5/8 inch equals 5 × 25.4 ÷ 8 = 15.8750 mm.
Change the decimal in the calculator above to convert any other number; leave the precision on Exact fraction for the precise answer.