Common denominators handled
For addition and subtraction, the calculator cross-multiplies to create a common denominator. For multiplication and division, it uses the direct fraction rules and then reduces the answer.
MathCalculator
Fraction Calculator
Add, subtract, multiply, or divide two fractions and see the simplified fraction, decimal, and percent result.
What it means
About this calculator.
Why show numerator and denominator separately
The generic calculator cards display numbers, so the reduced fraction is shown as two result cards. Read them together: numerator over denominator.
FAQ
Questions people usually have.
Can denominators be zero?
No. A denominator of zero is undefined, so the inputs clamp denominators to at least 1.
Does it simplify negative fractions?
Yes. The result is reduced by the greatest common divisor. Negative signs stay on the numerator side.
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