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Simplify Fractions Calculator

Reduce a fraction to lowest terms by dividing numerator and denominator by their greatest common divisor (GCD). Returns simplified fraction or mixed number.

Numerator

Denominator

Output format

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Number Theory

GCD Calculator

Find the greatest common divisor — the largest integer that divides two whole numbers exactly with no remainder. Use it to simplify fractions, reduce ratios, and solve number-theory problems.

First Number

Second Number

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Key differences

	Simplify Fractions Calculator	GCD Calculator
Category	Math	Number Theory
Inputs required	3	2
Result	Simplified fraction	Greatest Common Divisor
What it does	Reduce a fraction to lowest terms by dividing numerator and denominator by their greatest common divisor (GCD). Returns simplified fraction or mixed number.	Find the greatest common divisor — the largest integer that divides two whole numbers exactly with no remainder. Use it to simplify fractions, reduce ratios, and solve number-theory problems.