---
title: "Fraction Calculator: Add, Subtract, Multiply, Divide | MCC"
description: "Add, subtract, multiply or divide two fractions and get the simplified answer, the mixed number and the decimal, with the working shown. Free, no sign-up."
url: "https://mcc-solutionsnj.com/tools/fraction-calculator"
---

Free tool

# Fraction calculator

Enter two fractions and pick the operation. The answer is simplified and updates as you type.

First numerator

First denominator

Operation

Second numerator

Second denominator

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How it works

## How it works

To **add or subtract**, cross-multiply to a common denominator: a/b + c/d = (a x d + c x b) / (b x d). To **multiply**, multiply the tops and the bottoms. To **divide**, flip the second fraction and multiply. Every answer is reduced by the greatest common divisor of its top and bottom.

Example: 1/2 + 1/3 = (1 x 3 + 1 x 2) / (2 x 3) = 5/6, about 0.8333. 3/4 x 2/3 = 6/12 = 1/2. 3/4 divided by 1/2 = 3/4 x 2/1 = 6/4, which simplifies to 3/2 or 1 1/2.

FAQ

## About this calculator

**How do you add fractions with different denominators?**

Rewrite both over a common denominator, then add the tops. 1/2 + 1/3 = 3/6 + 2/6 = 5/6.

**How do you divide fractions?**

Flip the second fraction and multiply: 3/4 divided by 1/2 = 3/4 x 2/1 = 6/4 = 1 1/2.

**What is a mixed number?**

A whole number plus a proper fraction, such as 1 1/2 for 3/2.

**Can I enter a whole number?**

Yes. Use 1 as the denominator, so 3 is 3/1.

**Is anything saved?**

No. The math runs in your browser and nothing you enter is sent to us.

Related: [fraction to decimal calculator](/tools/fraction-to-decimal-calculator), [ratio calculator](/tools/ratio-calculator), [percentage calculator](/bookkeeping/percentage-calculator), [recipe scaler](/tools/recipe-scaler). See [all free tools](/free-tools). More free tools: [Ratio calculator](/tools/ratio-calculator), [Standard deviation calculator](/tools/standard-deviation-calculator), [Paint calculator](/tools/paint-calculator), or [see all free tools](/free-tools).

General information, not tax or legal advice. [How we write and check our tools](/editorial-standards).

Do it yourself

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