Decimal to Fraction Converter
Convert any decimal to its simplest fraction form. Enter a decimal number, and the calculator returns the equivalent fraction in lowest terms. For example, 0.75 converts to 3/4, and 0.125 converts to 1/8. The calculator automatically simplifies using the greatest common divisor.
Decimal to fraction conversion
| Decimal | Fraction |
|---|---|
| 0.50 | 1/2 |
| 0.25 | 1/4 |
| 0.75 | 3/4 |
| 0.20 | 1/5 |
| 0.40 | 2/5 |
| 0.125 | 1/8 |
| 0.375 | 3/8 |
Decimal to fraction: frequently asked questions
How do I convert a decimal to a fraction?
Count the decimal places. If there is one decimal place, the denominator is 10. Two decimal places: 100. Three: 1,000, and so on. Write the decimal without the decimal point as the numerator. Then simplify the fraction. For example, 0.75 = 75/100 = 3/4.
How do I simplify a decimal-to-fraction conversion?
Find the greatest common divisor (GCD) of the numerator and denominator, then divide both by the GCD. For example, 50/100 has GCD(50,100) = 50, so 50/100 = 1/2.
Can I convert repeating decimals?
Yes, but it is more complex. A repeating decimal like 0.333... is 1/3. This calculator handles terminating decimals directly; for repeating decimals, use the fraction to decimal converter in reverse.
Why convert decimals to fractions?
Fractions are exact, while decimals can be rounded. Fractions also show proportion clearly and are used in cooking, construction, and academic contexts.
What is a terminating decimal?
A terminating decimal ends after a finite number of digits, like 0.5, 0.25, or 0.125. These convert easily to fractions.
Official sources
- Standard mathematical formula for decimal to fraction conversion.
Reviewed by the CalculatorHub team, edited by James Graham, 14 June 2026. See our methodology.