---
title: "Fraction Calculator - Add, Subtract, Multiply, Divide | CanDoYa"
description: "Free online fraction calculator to add, subtract, multiply and divide fractions and mixed numbers. Get the answer in lowest terms instantly, in your browser."
url: https://candoya.com/tools/fraction-calculator/
locale: en
type: browser-tool
---

# Free Fraction Calculator

Category: Calculators

## What is a fraction calculator?

A fraction calculator adds, subtracts, multiplies and divides two fractions or mixed numbers and shows the answer reduced to lowest terms. Type a numerator and denominator, pick an operation, and you get the simplified fraction, the mixed number, and the decimal at once. It all runs in your browser.

Enter each fraction as a numerator over a denominator. Leave the whole-number box blank for a simple fraction like 3/4, or fill it in for a mixed number like 1 1/2. Every answer is computed with exact integer math, so there is no rounding error, and it is automatically simplified. Nothing is uploaded - the calculation happens entirely on your device.

## How to use it

1. **Enter the first fraction** - Type a numerator and denominator. Add a whole number for a mixed number like 2 1/3.
2. **Choose an operation** - Tap plus, minus, times, or divide between the two fractions.
3. **Enter the second fraction** - Fill in the second numerator and denominator the same way.
4. **Read the answer** - See the simplified fraction, the mixed number, and the decimal update live, then copy it.

## Who it's for

- **Students and parents** checking fraction homework and seeing the answer both as a fraction and as a mixed number.
- **Cooks and bakers** scaling recipes up or down, where 3/4 cup times 2 or 1/2 plus 1/3 has to be exact.
- **Woodworkers and DIYers** adding inch fractions like 5/8 + 7/16 without converting to decimals first.
- **Anyone** who needs a quick, exact fraction answer in lowest terms instead of a rounded decimal.

## Expert note

Division is done by multiplying by the reciprocal - a ÷ b/c becomes a × c/b - so dividing by a fraction whose numerator is zero is undefined, and the calculator flags it rather than showing a wrong answer.

## Frequently asked questions

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

Rewrite both fractions over a common denominator, add the numerators, then simplify. For 1/2 + 3/4, the common denominator is 4, giving 2/4 + 3/4 = 5/4, which is 1 1/4. This calculator does the common-denominator step and the reducing for you.

### Can it handle mixed numbers?

Yes. Type the whole number in its own box and the fraction beside it, so 1 1/2 is entered as whole 1, numerator 1, denominator 2. The tool converts it to an improper fraction, does the math, and gives the answer back as both a fraction and a mixed number.

### Does it simplify the answer?

Always. Every result is reduced to lowest terms by dividing the numerator and denominator by their greatest common divisor. So 6/8 is shown as 3/4, and a result like 4/2 is shown as the whole number 2.

### How does it divide fractions?

It multiplies the first fraction by the reciprocal of the second - you flip the second fraction and multiply. Dividing by zero (a second fraction of 0) has no answer, so the calculator shows a clear message instead of a result.

### Can I use negative fractions?

Yes. Put a minus sign on the whole number or the numerator, such as -3/4 or -1 1/2. The sign is carried through the arithmetic and the answer keeps the correct sign in lowest terms.

### Is it free and private?

Yes - it is 100% free with no sign-up and no limits, and every calculation runs locally in your browser. Nothing you type is ever uploaded to a server.

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*Markdown edition of <https://candoya.com/tools/fraction-calculator/>, published for AI agents and other automated readers. Index of key pages: <https://candoya.com/llms.txt>.*