Are results automatically simplified?
Yes. The resulting numerator and denominator are reduced to lowest terms.
Fraction Calculator
Add, subtract, multiply, or divide two fractions and simplify the result.
Calculations happen locally. We do not send your values to our server.
Example
One half plus one third equals five sixths, or approximately 0.833333.
Calculation method
Addition and subtraction use a common denominator. Multiplication multiplies corresponding terms; division multiplies by the reciprocal. The result is reduced by the greatest common divisor.
Important notes
Numerators and denominators must be integers, and denominators cannot be zero.
Frequently asked questions
Can I divide by a zero fraction?
No. Division by a fraction with a zero numerator is undefined.
Does it show a decimal?
Yes. A decimal approximation appears below the simplified fraction.