FractionCalculator

Fraction Calculator

Free online fraction calculator that lets you add, subtract, multiply, divide, simplify fractions, convert mixed numbers, and see step-by-step solutions instantly.

Fraction Calculator Pro
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Try an Example

Click any example to load it into the calculator above.

How to Use the Fraction Calculator

Add Fractions

Find a common denominator, add the numerators, then simplify the result.

Subtract Fractions

Find a common denominator, subtract the numerators, then simplify the result.

Multiply Fractions

Multiply the numerators together and the denominators together, then simplify.

Divide Fractions

Flip the second fraction (its reciprocal) and multiply, then simplify.

Simplify Fractions

Divide the numerator and denominator by their greatest common factor.

Convert Fractions

Divide the numerator by the denominator for a decimal, or multiply by 100 for a percentage.

Understanding Fractions

The building blocks behind every calculation this tool performs.

What is a Fraction?

A fraction represents a part of a whole, written as one number (the numerator) over another (the denominator) — for example, 3/4 means 3 out of 4 equal parts.

Proper Fractions

A proper fraction has a numerator smaller than its denominator, like 2/5, representing a value less than one whole.

Improper Fractions

An improper fraction has a numerator equal to or greater than its denominator, like 7/4, representing a value of one or more.

Mixed Numbers

A mixed number combines a whole number with a proper fraction, like 1 3/4 — the same value as the improper fraction 7/4.

Equivalent Fractions

Equivalent fractions represent the same value using different numbers, like 1/2 and 2/4 — found by multiplying or dividing both parts by the same number.

Common Denominators

To add or subtract fractions, they need the same denominator. The least common denominator is the smallest number both denominators divide into evenly.

Simplifying Fractions

Simplifying means dividing the numerator and denominator by their greatest common factor until the fraction is in its lowest terms.

Frequently Asked Questions

Find a common denominator for both fractions, add the numerators together, then simplify the result. This calculator does that automatically — just enter both fractions and tap +.

Practice Your Fraction Skills

Sharpen your skills with timed quizzes across three difficulty levels, or take on today's Daily Challenge.

Start Practicing

Take It With You

Get Fraction Calculator Pro on your phone — free, ad-free, and works even without a connection.