Fraction Calculator

Add, subtract, multiply or divide fractions and instantly get a simplified result, decimal value and mixed number.

First Numerator
First Denominator
Operation
Second Numerator
Second Denominator

How to Use the Fraction Calculator

Enter the two fractions, choose addition, subtraction, multiplication or division, then calculate the simplified result.

Practical Example

For 1/2 + 1/4, convert to a common denominator: 2/4 + 1/4 = 3/4.

Factors That Affect the Result

Zero denominators are invalid, signs must be handled correctly, and repeating decimal equivalents may be rounded for display.

Frequently Asked Questions

Can it simplify fractions?

Yes. Results are reduced to lowest terms.

Can I enter negative fractions?

Yes.

Can a denominator be zero?

No. Division by zero is undefined.

Related Tools

Working with Fractions

Fractions represent parts of a whole using a numerator and denominator. Addition and subtraction require a common denominator, while multiplication can be performed by multiplying numerators together and denominators together. Division uses the reciprocal of the second fraction. For example, 1/2 + 1/3 becomes 3/6 + 2/6 = 5/6. Results are usually easiest to read when reduced to lowest terms by dividing the numerator and denominator by their greatest common factor. A denominator cannot be zero because division by zero is undefined. Negative signs can be written in the numerator, denominator or before the fraction, but a consistent form makes results clearer. When entering mixed numbers, make sure the calculator’s expected format is followed so that a value such as 2 1/3 is not interpreted as separate inputs.