LCM Calculator

Find the LCM of two or three numbers with step-by-step breakdowns. Free online least common multiple calculator.

About LCM Calculator

Our LCM Calculator helps you find the Least Common Multiple of two or three numbers. The calculator shows the multiples, GCF, and uses the formula LCM(a,b) = (a×b)/GCF(a,b). Perfect for adding fractions, solving problems involving repeated events, and math students.

Least Common Multiple Calculator

First Number ?Enter a positive integer

Second Number ?Enter a positive integer

Calculation Breakdown

Method --

Step 1 --

Step 2 --

Answer --

Additional Information

Multiples --

GCF --

Product Check --

What is LCM?

The Least Common Multiple (LCM) is the smallest positive integer that is divisible by two or more numbers. It is useful for adding fractions with different denominators, finding common time intervals, and solving periodicity problems.

Formulas

LCM via GCF LCM(a,b) = (a × b) / GCF(a,b)

Three Numbers LCM(a,b,c) = LCM(LCM(a,b), c)

Real-Life Examples

Scheduling

Buses: Bus A every 12 min, Bus B every 18 min. Both together every LCM(12,18) = 36 min.

Fractions

Add: 1/4 + 1/6 = 3/12 + 2/12 = 5/12 using LCM(4,6) = 12.

Gears

Mechanics: Gear A has 8 teeth, Gear B has 12 teeth. They realign every 24 rotations.

Calendar

Meetings: Team A meets every 5 days, Team B every 7 days. Together every 35 days.

Disclaimer: Results are for general educational purposes only. Please verify important calculations independently.

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Features

Security

Secure & Private

Your files are processed securely and deleted immediately after.

Speed

Fast Processing

Get your results in seconds with our optimized processing engine.

Setup

No Installation

Works entirely in your browser. No software to install.

Pricing

Free to Use

Use this tool completely free with no hidden charges.

Limit

Generous Limits

Enjoy generous file limits with no surprise caps on size or count.

Quality

High Quality Output

Results are rendered at full quality, ready for production use.

Frequently Asked Questions

Is LCM Calculator free to use?

Yes, this tool is completely free to use. There are no hidden fees or subscription requirements.

Are my files safe and secure?

Absolutely. All file processing happens securely. Your files are automatically deleted from our servers after processing.

What file formats are supported?

This tool supports a wide range of common file formats. Check the upload area for specific format requirements.

Do I need to create an account?

No account is required. Simply upload your file, process it, and download the result.

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