Fraction Calculator
a/b + c/d = (ad+bc)/bd; − = (ad−bc)/bd; × = ac/bd; ÷ = ad/bc(1×3+2×1)/(2×3)=(3+2)/6=5/6
Free online tool
Fraction Calculator
Enter two fractions and choose an operation.
Instant calculation
Fraction Calculator
Enter two fractions and choose an operation.
Your result
Calculation
Your numbers stay in this browser. Nothing is uploaded or saved.
Three clear steps
How to use this calculator
- 01
Enter first fraction
Type the numerator and denominator of the first fraction.
- 02
Enter second fraction
Type the numerator and denominator of the second fraction.
- 03
Choose operation
Select add, subtract, multiply or divide.
The formula
How this calculation works
Common denominator method for addition and subtraction. Multiply across for multiplication. Invert and multiply for division.
Check the method
Worked examples
Each example follows the same formula used by the calculator.
1/2 + 1/3?
(1×3+2×1)/(2×3)=(3+2)/6=5/65/6Common questions
Questions about this calculation
What is the Fraction Calculator?
The Fraction Calculator helps you add, subtract, multiply or divide two fractions. Enter your values and select Calculate to get an instant result.
How is the result calculated?
Common denominator method for addition and subtraction. Multiply across for multiplication. Invert and multiply for division.
Can you show an example?
Example: 1/2 + 1/3? — 5/6.
Is my data saved when I use the Fraction Calculator?
No. All calculations run locally in your browser. Your inputs and results are never uploaded, stored or shared with anyone.
Is the Fraction Calculator free to use?
Yes. The Fraction Calculator is completely free. No account, sign-up or payment is required. It works on mobile, tablet and desktop.
Continue calculating