🔢LCM & HCF Calculator
Find LCM and HCF of numbers.
About the LCM & HCF Calculator
Calculate the LCM (Lowest Common Multiple) and HCF/GCD (Highest Common Factor) of two or more numbers instantly. Free online LCM and HCF calculator for students.
How to use the LCM & HCF Calculator
- 1Enter your numbers into the LCM & HCF Calculator fields above.
- 2Adjust the rate, period, units or other options to match your situation.
- 3Your result is calculated instantly as you type — there's no submit button.
- 4Nothing is stored or uploaded; every calculation runs privately in your browser.
Why use this tool?
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Private by design
The LCM & HCF Calculator runs entirely in your browser — nothing you enter is uploaded to a server.
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Free, no signup
Use it as much as you like. There's no account, no paywall and no watermark.
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Fast & instant
Results appear the moment you type or click — no waiting, no page reloads.
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Works anywhere
Any device or browser, even offline once the page has loaded.
Frequently asked questions
What's the difference between LCM and HCF?＋
HCF (Highest Common Factor) is the largest number that divides all your numbers; LCM (Lowest Common Multiple) is the smallest number they all divide into.