Fraction Calculator
Add, subtract, multiply and divide fractions and mixed numbers, with the answer simplified, as a mixed number and as a decimal.
How to use
- 1Enter two fractions (3/4), mixed numbers (1 1/2) or decimals.
- 2Pick the operation to get the simplified answer.
How it's calculated
a/b + c/d = (ad + bc)/bd; a/b × c/d = ac/bd; a/b ÷ c/d = ad/bc. Results are reduced by the greatest common divisor.
Frequently asked questions
How do I add fractions with different denominators?
Rewrite them over a common denominator: 1/2 + 1/3 = 3/6 + 2/6 = 5/6.
How do I divide fractions?
Multiply by the reciprocal of the second fraction: 1/2 ÷ 3/4 = 1/2 × 4/3 = 4/6 = 2/3.
How do I enter a mixed number?
Leave a space between the whole number and the fraction, like 2 3/8.