Fraction Calculator
Add, subtract, multiply and simplify fractions.
1/2 + 3/4 = (1ร4 + 3ร2) / (2ร4) = 10/8 simplified (GCD) = 5/4
Results are always reduced to lowest terms; negatives are kept on the numerator.
About the Fraction Calculator
Add, subtract, multiply or divide two fractions with numerator and denominator entered separately. Results are reduced to lowest terms via the GCD, shown additionally as a mixed number and as a decimal, and the full cross-multiplication working is printed so the method is checkable for homework.
How to use the Fraction Calculator
- Enter the numerator and denominator of the first fraction.
- Choose the operation: +, โ, ร or รท.
- Enter the second fraction's numerator and denominator.
- Read the simplified result, mixed number and decimal, with the working below.
Fraction Calculator FAQ
Are results always simplified?
Yes โ every result is divided by the greatest common divisor of numerator and denominator, and negative signs are normalized onto the numerator.
How is division by zero handled?
Dividing by a zero numerator fraction, or entering a zero denominator, produces a clear Division by zero error rather than an infinite value.
What does the working show?
The exact intermediate fraction before simplification โ for addition, the (aรd + bรc)/(bรd) cross-multiplication โ so you can copy the method into schoolwork.