Multiples Calculator: Common Multiples
This multiples calculator lists the multiples of any whole number, such as the first 20 multiples of 7. Enter two or more numbers and it finds their common multiples and the least common multiple (LCM), showing a table of each list so you can see where they overlap. A check mode tells you whether one number is a multiple of another and shows the division. It is a helpful companion to times tables, fraction work with common denominators, and scheduling problems like when two events will happen on the same day.
Multiples Calculator
List the multiples of a number, find common multiples and the LCM, or check if one number is a multiple of another.
How to use the Multiples Calculator
- Enter one number, or several separated by commas.
- Choose how many multiples to list.
- Read the list, common multiples and LCM.
- Use check mode to test if x is a multiple of y.
Multiples and LCM
Multiples of n are n × 1, n × 2, n × 3 and so on. LCM(a, b) = a × b ÷ GCD(a, b), and common multiples are the multiples of the LCM.
Features
- First N multiples of any number
- Common multiples of 2 or more numbers
- Least common multiple
- Is x a multiple of y check
- Side-by-side table
- Copy and print
Frequently asked questions
What is a multiple?
A multiple of a number is that number times a whole number. Multiples of 4 are 4, 8, 12, 16 and so on.
What are the common multiples of 4 and 6?
12, 24, 36, 48 and so on. The smallest, 12, is the least common multiple.
How do I check if a number is a multiple of another?
Divide. If the remainder is zero, it is a multiple. 84 ÷ 7 = 12 with no remainder, so 84 is a multiple of 7.
Is a number a multiple of itself?
Yes. Every number is a multiple of itself (times 1), and 0 is a multiple of every number.
What is the difference between factors and multiples?
Factors divide into a number; multiples are what you get when you multiply it. 3 is a factor of 12, and 12 is a multiple of 3.