Fraction Calculator
Add, subtract, multiply, or divide fractions
Frequently Asked Questions
Find a common denominator, convert both fractions to have it, then add or subtract the numerators and keep the denominator. This calculator does that automatically and simplifies the result.
Multiply the numerators together and the denominators together: (a/b) × (c/d) = (a×c)/(b×d), then simplify.
Multiply the first fraction by the reciprocal of the second: (a/b) ÷ (c/d) = (a/b) × (d/c), then simplify.
Divide both the numerator and denominator by their greatest common divisor (GCD) until no common factor remains other than 1.