Fraction Calculator
Free online fraction calculator. Add, subtract, multiply, and divide fractions with step-by-step simplification.
About the Fraction Calculator
Our free fraction calculator adds, subtracts, multiplies, and divides fractions and mixed numbers, then shows the answer fully reduced to its simplest form. Enter two fractions, choose an operation, and the tool finds a common denominator where needed, performs the math, and converts improper results back into a clean mixed number. It is built for homework, baking and recipe scaling, woodworking and construction measurements, and any everyday situation where you need an exact answer instead of a rounded decimal. Because it simplifies automatically, you avoid the tedious step of finding the greatest common divisor by hand, and you can check your own work in seconds. The calculator runs entirely in your browser with instant results, no signup, and no ads getting in the way of the answer you came for.
Features
- Add, subtract, multiply and divide fractions
- Whole-number numerator and denominator fields
- Simplified fraction, decimal and percentage result
- Rejects zero denominators and division by zero
- Copy a calculation summary
- Browser-only processing
How to use this tool
The Fraction Calculator works right in your browser — no signup, no installation. Follow these steps:
- Enter the first fraction (numerator and denominator).
- Select the operation: Add, Subtract, Multiply, or Divide.
- Enter the second fraction.
- View the simplified result, decimal, percentage, and step-by-step work.
Frequently asked questions
How do I add two fractions?
Enter each numerator and denominator in its own field and choose Add. The result includes the reduced fraction, decimal and percentage.
Can I enter mixed numbers?
Convert a mixed number to an improper fraction first: 1 1/2 becomes numerator 3 and denominator 2. The input fields accept whole numbers only.
Are results always simplified?
Yes. All results are reduced to their simplest form using the greatest common divisor (GCD).
Using the results
Use the Fraction Calculator to calculate from the values you enter. Check the displayed units, rounding and supported inputs when interpreting the result.