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LCM Calculator

QUICK LINKS


LCM Calculator

Least Common Multiple (LCM)

CALCULATOR
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LCM Calculator

Find the least common multiple, or LCM, ofand.

Step 1. Remember what a multiple is.

A multiple is the product of a number with any other number.

Step 2. Find the first multiple of each number.

We start by multiplying each number by .

Step 3. Find the next multiple of each number.

Multiply each number by the next integer.

Step 4. Check for the least common multiple.

Look for a multiple that shows up for both numbers. If you don't see one, repeat Step 3. If you do see one, stop πŸ›‘. This is the least common multiple.
So, the least common multiple, or LCM, is .
We have some questions for you! Help us out through this
INTRO
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A multiple of a given number is what you get when you multiply the given number by another number.
Since there is an infinite amount of numbers you can multiply by, there is an infinite amount of multiples for any number. The list goes on and on like magic
.
For example, let’s take a look at multiples of :
Multiples of
The Least Common Multiple (LCM) is the smallest multiple two or more numbers have in common.
Multiples of
Multiples of
When we organize the factors from least to greatest, we can easily see that the LCM of and is .

Least Common Denominator

We can use the LCM to find a common denominator when adding and subtracting fractions. The LCM of the denominators is the least common denominator.
Check out our
Calculator
or explore our
Lesson
and
Practice
sections to learn more about how to find the least common multiple and test your understanding.

You can also use the Quick Links menu on the left to jump to a section of your choice.

You can also use the Quick Links dropdown above to jump to a section of your choice.

KEY STEPS
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How to Find the LCM

Step 1. Remember what a multiple is.

A multiple is the product of a number with any other number.

Step 2. Find the first multiple of each number.

We start by multiplying each number by .

Step 3. Find the next multiple of each number.

Multiply each number by the next integer.

Step 4. Check for the least common multiple.

Look for a multiple that shows up for both numbers. If you don't see one, repeat Step 3. If you do see one, stop πŸ›‘. This is the least common multiple.
LESSON
β€” Finding the LCM
PRACTICE
β€” Finding the LCM
CONCLUSION
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