LCM and HCF (GCD) Calculator

Find the LCM and HCF (also called GCD) of two or more whole numbers.

How to use the lcm and hcf calculator

1. Type your numbers in the boxes (pick your currency or units if asked).
2. The answer updates as you type: no button to press.
3. Copy the result, or share it on WhatsApp with one tap.

Questions

How are LCM and HCF related?

For two numbers, LCM × HCF = the product of the numbers.

Is my data private?

Yes. Everything happens inside your own browser: nothing you type or choose is uploaded to us or anyone else.

Is it free?

Completely free, with no sign-up, no watermark and no limit on how many times you use it. Light ads keep the site running.