How to use the Fraction Calculator
- Enter both fractions.
- Choose an operation.
- Read the simplified result.
How it works
Add/subtract: a/b ± c/d = (ad ± cb) ÷ bd. Multiply: ac ÷ bd. Divide: multiply by the reciprocal. Reduce by the greatest common divisor.
Worked example
1/2 + 1/3 = 5/6, which is 0.8333 or 83.33%.
Good to know
Denominators cannot be zero.
Results show a mixed number when the value exceeds 1.
Use whole numbers for numerators and denominators.
Frequently asked questions
Convert to a common denominator, add the numerators and simplify.
Multiply the first fraction by the reciprocal of the second.
Divide numerator and denominator by their greatest common divisor.