Fraction Calculator: The Complete Guide
Do math with fractions the easy way. Enter two fractions and an operation to add, subtract, multiply, or divide them, and get the answer reduced to lowest terms with its decimal value.
Who the Fraction Calculator is for
Students and anyone working with fractions who wants an exact, simplified result.
How to use the Fraction Calculator
- Type your values into the fields above — pick your currency or units where the calculator offers them.
- Results update automatically as you type; there's no submit button and nothing is sent to a server.
- Adjust any input to compare scenarios, then copy the result with a single click.
How it works
Fractions are combined with a common denominator (for + and −) or directly (for × and ÷), then reduced by dividing the numerator and denominator by their greatest common divisor.
Features
- Add, subtract, multiply, divide
- Reduced to lowest terms
- Decimal equivalent
- Handles negatives
Working with fractions
Adding and subtracting fractions requires a common denominator; multiplying and dividing don't. After combining, the result is simplified by dividing both parts by their greatest common divisor. This calculator does all of that and also shows the decimal value, so you can check your work at a glance.