Fraction Calculator — Free Online Tool
Add, subtract, multiply or divide two fractions with a simplified result.
About Fraction Calculator
The Fraction Calculator adds, subtracts, multiplies and divides two fractions and returns the answer as a fully simplified fraction along with its decimal value. It handles the common denominator and reduction steps for you, so you do not have to work them out by hand.
Whether you are helping with homework, scaling a recipe or working through a maths problem, this tool gives a clean result every time. The numerator, denominator and chosen operation are all processed instantly in your browser.
How to Use Fraction Calculator
- Enter the numerator and denominator of the first fraction.
- Pick an operation: add, subtract, multiply or divide.
- Enter the numerator and denominator of the second fraction.
- Click "Calculate" to see the simplified fraction and its decimal value.
Key Features
Add, subtract, multiply and divide fractions
Automatically reduces the answer to lowest terms
Shows both the fraction and its decimal equivalent
Warns about zero denominators and invalid input
Instant, private calculation in your browser
Frequently Asked Questions
How does the calculator simplify fractions?
It finds the greatest common divisor of the numerator and denominator of the result and divides both by it, giving the fraction in its lowest terms.
What happens if I divide by a fraction equal to zero?
Division by a fraction whose numerator is zero is undefined, so the tool shows a warning and asks you to enter a valid divisor.
Can the result be a whole number?
Yes. If the simplified denominator is 1, the calculator displays the answer as a whole number instead of a fraction over one.
Does it work with negative fractions?
Yes. You can enter negative numerators or denominators and the tool keeps the sign in the numerator of the simplified result.