Education

GCD & LCM Calculator

Greatest common divisor and least common multiple of two or more numbers.

Education

Local only

Whole numbers

Everything stays in your browser

Your text is processed on your device — nothing is uploaded to a server.

How it works

Euclid's algorithm with exact big integers.

Good to know

How do I use it?

Enter your whole numbers and press “Calculate”. Check the result, then copy or download it.

How does it work?

Euclid's algorithm with exact big integers.

Is my data uploaded?

No. Everything is processed in your browser and nothing is sent to a server. No account is needed.