➗ Fraction Calculator
Enter two fractions, pick the operation, and get the answer reduced to lowest terms, as a mixed number and as a decimal. Great for homework checks.
How the Fraction Calculator works
Fractions are combined with the usual rules (common denominator for adding and subtracting, multiply across, multiply by the reciprocal to divide) and the result is simplified by dividing top and bottom by their greatest common divisor.
Step-by-step calculation
- 1Enter both fractions and the operation.
- 2Find a common denominator (for + and −) or multiply/flip (for × and ÷).
- 3Simplify by the greatest common factor.
- 4Show as a mixed number and decimal.
Worked example
3/4 + 2/5 = 15/20 + 8/20 = 23/20 = 1 3/20.
Fraction Calculator examples
| Fraction 1 top | Answer |
|---|---|
| 2 | 9/10 |
| 3 | 23/20 = 1 3/20 |
| 4 | 7/5 = 1 2/5 |
| 5 | 33/20 = 1 13/20 |
Other inputs kept at the calculator's default values. Results calculated by this calculator.
Why use a Fraction Calculator?
Solve fraction homework and recipe math without mistakes.
Important factors that can affect your results
- Zero denominators are not allowed.
- Negative signs.
- Simplifying fully.
Frequently asked questions
Can I use negative fractions?
Yes, put a minus sign in front of the top number.
What does simplest form mean?
The top and bottom numbers have no common factor other than 1, for example 6/8 becomes 3/4.
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Last reviewed November 2026 · How we build and check our tools · Report a problem