About the Fraction Calculator
Add, subtract, multiply or divide fractions and mixed numbers. Answers are simplified automatically and shown as an improper fraction, a mixed number and a decimal, with the working shown.
How to use it
- Enter the first fraction (whole number optional).
- Choose an operation.
- Enter the second fraction and read the simplified result.
Formula & method
a/b + c/d = (ad + bc) / bd
a/b × c/d = ac / bd
a/b ÷ c/d = ad / bcFrequently asked questions
How do I simplify a fraction?
Divide the numerator and denominator by their greatest common divisor. For example, 12/18 ÷ 6/6 = 2/3.
Results are estimates for general information only and are not financial, tax, legal or medical advice. Please confirm important decisions with a qualified professional.