Free GCD and LCM Calculator Online
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About This Tool
The GCD and LCM Calculator finds the Greatest Common Divisor (GCD) and Least Common Multiple (LCM) of two or more numbers — showing the prime factorization steps. Useful for fraction simplification, math coursework, and programming challenges. Free, no account, runs in browser.
How to Use
- 1
Enter two or more integers separated by commas.
- 2
The GCD and LCM calculated results appear instantly.
- 3
Review the step-by-step prime factorization shown below for understanding.
Frequently Asked Questions
What is GCD used for?
GCD is used to simplify fractions, find the simplest form of ratios, and solve problems involving divisibility in mathematics and programming.
What is LCM used for?
LCM is used to find the smallest common multiple when adding fractions with different denominators, and for scheduling problems involving repeating cycles.
Is this GCD LCM calculator free?
Yes. Completely free with no account required.