When this tool is useful
A fraction calculator is useful for adding and subtracting fractions with different denominators, multiplying parts or dividing one fraction by another. Enter non-zero denominators and check whether a decimal approximation is useful for your task.
How to use it
- Enter the numerator and denominator for each fraction.
- Choose the arithmetic operation available in the calculator.
- Run the calculation and check the resulting fraction or decimal.
Common uses
- Adding or comparing common fractions
- Checking fraction arithmetic in homework
- Reviewing a fractional value before converting units
Tips for a reliable result
Tips for a reliable result
Check that neither denominator is zero and use parentheses when writing a multi-step calculation. The decimal is a rounded display; the simplified fraction is the exact result when supported.
Frequently asked questions
Can it add fractions with different denominators?
Yes. It forms a common denominator, applies the selected operation and simplifies the result using the greatest common divisor.
Why can’t I use a denominator of zero?
A fraction with a zero denominator is undefined, and division by zero is not allowed.
Does the tool show a decimal?
Yes. It shows the simplified fractional result and a decimal equivalent for quick checking.
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