Math & Algebra
Fraction Calculator
Add, subtract, multiply, or divide two fractions and see the simplified answer, decimal value, and basic working.
First fraction
Second fraction
Educational estimates only. Not medical, legal, tax, or financial advice.
Guide: Fraction Calculator
What it does
This tool performs the four basic fraction operations, reduces the answer, and shows a decimal value for checking.
How to use it
Enter each numerator and denominator, choose the operation, and calculate. Denominators must be non-zero.
Formula
a/b + c/d = (ad + bc) / bd. Multiplication uses ac / bd. Division uses ad / bc.
Example
1/2 + 1/3 becomes 3/6 + 2/6 = 5/6, which is about 0.833333.
FAQs
Can this calculator subtract, multiply, and divide fractions?
Yes. Choose the operation, enter both fractions, and the calculator simplifies the result where possible.
What happens if a denominator is zero?
A denominator of zero is invalid because division by zero is undefined. The calculator will ask for a non-zero denominator.
How is a fraction simplified?
The numerator and denominator are divided by their greatest common divisor, then the sign is normalized.