Fraction Calculator

Add, subtract, multiply, and divide fractions with instant answers.

First fraction
Denominator
Second fraction
Denominator

Result

1/2

≈ 0.5 as a decimal

Simplified: 1/2

Leave the whole-number box empty to enter a plain fraction. Results are reduced to lowest terms with the greatest common divisor. Everything runs in your browser; nothing is sent or stored.

About this tool

Adding or dividing fractions by hand means finding common denominators, converting mixed numbers, and reducing the result, plenty of places to slip up. This fraction calculator does all of it instantly: enter two fractions (as plain fractions or mixed numbers like 2 3/4), choose add, subtract, multiply, or divide, and get the answer right away.

Every result is fully simplified to lowest terms using the greatest common divisor, and improper fractions are converted into easy-to-read mixed numbers. You also get the decimal equivalent at a glance, which is useful when you need to compare a fraction to a decimal measurement or plug it into another calculation.

How to use the fraction calculator

  1. 1Enter your first fraction (whole number is optional, leave it empty for a plain fraction).
  2. 2Pick an operation: add (+), subtract (−), multiply (×), or divide (÷).
  3. 3Enter your second fraction.
  4. 4See the result as a simplified mixed number, its decimal value, and the reduced improper fraction.

Good to know

Whether you're helping with homework, doubling a recipe, or working out measurements for a project, the tool guards against common mistakes like a zero denominator or dividing by zero. And since everything runs in your browser, there are no signups, no ads tracking your work, and no waiting.

Frequently asked questions

Type 2 in the Whole box, 3 in the numerator, and 4 in the denominator. Leave the Whole box empty to enter a plain fraction like 3/4.

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