Method
Use a common denominator for addition or subtraction. Multiply numerators and denominators for multiplication; multiply by the reciprocal for division. The result is reduced by its greatest common factor.
Example
3/4 + 1/6 = 11/12 after using 12 as the common denominator.
Limits
Check inputs and units. Important academic, financial or professional decisions should be confirmed against an appropriate source.
Common questions
What does the fraction calculator calculate?
Add, subtract, multiply or divide two fractions and simplify the result.
Does this fraction calculator show its method?
Yes. The result includes the central formula or working needed to check the answer.
Are my values uploaded?
No. The calculation runs in this browser and does not require an account.