Fraction to Percent Calculator
Convert any fraction to a percentage. Enter a numerator and denominator, and the calculator returns the equivalent percentage. For example, 1/2 = 50%, 3/4 = 75%, and 1/3 = 33.33%.
Fraction to percentage conversion table
| Fraction | Percentage |
|---|---|
| 1/2 | 50.00% |
| 1/3 | 33.33% |
| 1/4 | 25.00% |
| 2/3 | 66.67% |
| 3/4 | 75.00% |
| 1/5 | 20.00% |
| 4/5 | 80.00% |
Fraction to percent: frequently asked questions
How do I convert a fraction to a percentage?
Divide the numerator by the denominator to get a decimal, then multiply by 100 to get the percentage. For example, 3/4 = 0.75 = 75%. Alternatively, (numerator / denominator) * 100.
What is the formula?
Percentage = (numerator / denominator) * 100. For 1/2, the calculation is (1/2) * 100 = 50%.
When would I use this?
Convert fractions to percentages when comparing parts of a whole, reporting test scores, or expressing probabilities. Percentages are easier to understand and compare than fractions.
Can a percentage from a fraction exceed 100%?
Yes, if the numerator is larger than the denominator. For example, 5/2 = 250%. This represents a value greater than one whole unit.
How many decimal places should I use?
Common practice is two decimal places for percentages (e.g., 33.33%). Use more decimal places for precision when needed.
Official sources
- Standard mathematical formula for fraction to percent conversion.
Reviewed by the CalculatorHub team, edited by James Graham, 14 June 2026. See our methodology.