FC

Fraction Calculator

Math & Science · Free · Runs entirely in your browser

Add/subtract/multiply/divide fractions or mixed numbers — the result comes back automatically simplified.

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Fractions
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How to use — Fraction Calculator

  1. Enter the first fraction's numerator/denominator, choose an operation, enter the second fraction.
  2. The result is automatically simplified (lowest terms), along with the decimal value.

FAQ

How is it simplified?

The GCD (Greatest Common Divisor) is found and both numerator and denominator are divided by it — e.g. 4/8 simplifies to 1/2.

Do mixed numbers (like 2½) work?

Currently only simple fractions (numerator/denominator) are supported. Convert a mixed number to an improper fraction first (2½ = 5/2).

Do negative fractions work?

Yes — you can enter a negative number in either the numerator or denominator.

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