Fractions and percentages are two ways to show parts of a whole. A fraction uses a numerator and denominator. A percentage shows the value out of 100.
Use the Fraction Calculator to simplify or combine fractions. Then use the Percentage Calculator when you need percent form.
How to convert a fraction to a percentage
- Divide the numerator by the denominator.
- Multiply the result by 100.
- Add the percent sign.
Examples
- 1/2 = 0.5 = 50%
- 1/4 = 0.25 = 25%
- 3/4 = 0.75 = 75%
- 1/8 = 0.125 = 12.5%
Mixed numbers
For a mixed number like 1 1/2, convert it to 1.5 first. Then multiply by 100 to get 150%.
When this is useful
Fraction-to-percentage conversion is useful for grades, recipes, measurements, discounts, probability, and statistics. Students can also use the Grade Calculator for school results.