Fraction Calculator
Add, subtract, multiply and divide fractions with full working.
Reviewed by James Whitfield · How we check our maths
Your values
ⓘ Live results
Results
- Result
- 19/12
- Mixed number
- 1 7/12
- Decimal
- 1.583333
- Percentage
- 158.333%
Working
- 13/4 + 5/6 = 38/24
- 2Divide both by GCD 2 → 19/12
Quick answer
To add fractions, put them over a common denominator; to multiply, multiply numerators and denominators; to divide, invert and multiply.
The formula
a/b + c/d = (ad + bc) / bd
Worked example
Worked example
Using the values the calculator loads with.
Inputs
- First numerator3
- First denominator4
- OperationAdd
- Second numerator5
- Second denominator6
Result
- Result19/12
- Mixed number1 7/12
- Decimal1.583333
- Percentage158.333%
How to use the Fraction Calculator
- 1Enter the first fraction.
- 2Choose the operation.
- 3Enter the second fraction and read the simplified answer.
Frequently asked questions
How do you divide fractions?
Flip the second fraction and multiply: 3/4 ÷ 5/6 = 3/4 × 6/5 = 18/20 = 9/10.
What is simplifying?
Dividing numerator and denominator by their greatest common divisor so the fraction is in lowest terms.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error