0.25 as a fraction is 1/4. As a percent it is 25%. The fraction is in lowest terms: the numerator and denominator share no common factor other than 1.
How to convert 0.25 to a fraction
Step 1. Write 0.25 over a power of ten. It has 2 digits after the decimal point, so the denominator is 100: 0.25 = 25/100.
Step 2. Find the greatest common divisor of 25 and 100, which is 25.
Step 3. Divide the top and bottom by 25: 25 ÷ 25 = 1 and 100 ÷ 25 = 4. The result is 1/4.
The denominator 4 factors into 2 × 2, so this decimal terminates, as every decimal that is written with a finite number of digits does.
0.25 compared with nearby decimals
These decimals have the same number of places as 0.25, so the same method gives their fractions:
| Decimal | Fraction | Percent |
|---|---|---|
| 0.23 | 23/100 | 23% |
| 0.24 | 6/25 | 24% |
| 0.26 | 13/50 | 26% |
| 0.27 | 27/100 | 27% |
Multiples of 0.25
Scaling the fraction is a quick way to check your work. Each row multiplies 0.25 (1/4) by a whole number:
| Multiple | Decimal | Fraction | Mixed number |
|---|---|---|---|
| 2 × 0.25 | 0.5 | 1/2 | 1/2 |
| 3 × 0.25 | 0.75 | 3/4 | 3/4 |
| 4 × 0.25 | 1 | 1 | 1 |
| 5 × 0.25 | 1.25 | 5/4 | 1 1/4 |
| 10 × 0.25 | 2.5 | 5/2 | 2 1/2 |
1/4 of an inch
Tape measures and drill bits use binary fractions of an inch. Since one inch is defined as exactly 25.4 millimetres, 1/4 inch equals 1 × 25.4 ÷ 4 = 6.3500 mm.
Change the decimal in the calculator above to convert any other number; leave the precision on Exact fraction for the precise answer.