Free online fraction calculator that lets you add, subtract, multiply, divide, simplify fractions, convert mixed numbers, and see step-by-step solutions instantly.
Click any example to load it into the calculator above.
Find a common denominator, add the numerators, then simplify the result.
Find a common denominator, subtract the numerators, then simplify the result.
Multiply the numerators together and the denominators together, then simplify.
Flip the second fraction (its reciprocal) and multiply, then simplify.
Divide the numerator and denominator by their greatest common factor.
Divide the numerator by the denominator for a decimal, or multiply by 100 for a percentage.
The building blocks behind every calculation this tool performs.
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.
A proper fraction has a numerator smaller than its denominator, like 2/5, representing a value less than one whole.
An improper fraction has a numerator equal to or greater than its denominator, like 7/4, representing a value of one or more.
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 represent the same value using different numbers, like 1/2 and 2/4 — found by multiplying or dividing both parts by the same number.
To add or subtract fractions, they need the same denominator. The least common denominator is the smallest number both denominators divide into evenly.
Simplifying means dividing the numerator and denominator by their greatest common factor until the fraction is in its lowest terms.
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