CalculatorZoneHow to use the fraction calculator
Enter both fractions, choose an operation and read the simplified result.
How the fraction calculator works
To add or subtract, use a common denominator: a/b + c/d = (ad + cb)/bd. To multiply, multiply tops and bottoms. To divide, multiply by the reciprocal: a/b ÷ c/d = ad/bc. The result is reduced using the greatest common divisor.
Frequently asked questions
How do you add fractions?
Convert them to a common denominator, add the numerators and simplify.
How do you divide fractions?
Flip the second fraction and multiply.
Can I use negative numbers?
Yes. Enter a negative numerator.