Convert fraction to percentage or percentage to fraction instantly. Use a period or comma as the decimal separator.
Fraction and Percentage Conversion
Result:
Result:
How to convert a fraction to a percentage
Divide the numerator by the denominator and multiply by 100:
(Numerator ÷ Denominator) × 100 = X%
Example: 3/4 → (3 ÷ 4) × 100 = 75%
How to convert a percentage to a fraction
Write the percentage over 100 and simplify by the GCD:
Example: 75% → 75/100 → GCD(75, 100) = 25 → 3/4
Reference table
| Fraction | Decimal | Percentage |
|---|---|---|
| 1/2 | 0.5 | 50% |
| 1/4 | 0.25 | 25% |
| 3/4 | 0.75 | 75% |
| 1/3 | 0.333… | 33.33…% |
| 2/3 | 0.666… | 66.66…% |
| 1/5 | 0.2 | 20% |
| 1/10 | 0.1 | 10% |
Frequently asked questions
How do I convert a fraction to a percentage?
Divide the numerator by the denominator and multiply by 100. Ex.: 3/4 = 0.75 × 100 = 75%.
How do I convert a percentage to a fraction?
Write X% as X/100 and simplify by the GCD. Ex.: 75% = 75/100 = 3/4.
What is an irreducible fraction?
An irreducible fraction has a numerator and denominator with no common factor other than 1. To simplify, divide both by the GCD (Greatest Common Divisor).
Can I use a comma instead of a decimal point?
Yes. This calculator accepts both comma and period as the decimal separator.
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