LCM & GCF (HCF) Calculator
Find the LCM and GCF/HCF of two or more numbers with prime-factor working.
About the LCM & GCF (HCF) Calculator
The greatest common factor (GCF, also called HCF or GCD) is the largest number that divides all the numbers; the least common multiple (LCM) is the smallest number they all divide into. Used for simplifying fractions, adding fractions and scheduling problems.
How to use the LCM & GCF (HCF) Calculator — step-by-step guide
Frequently asked questions
Is the LCM & GCF (HCF) Calculator free?
Yes. The LCM & GCF (HCF) Calculator on Apex Tool Station is 100% free with no signup and no watermark. Browser tools have no usage limits.
Are my files or data uploaded to a server?
No. Everything runs locally in your browser using JavaScript. Your files and text never leave your device, which makes it safe for private documents.
Does it work on mobile?
Yes. The tool works on any modern browser on Android, iPhone, Windows, Mac and Linux.