# Lcm finder

## World's simplest number tool

Quickly find the least common multiple (LCM) of numbers in your browser. To get LCM, just enter your numbers in the input field, adjust their separator character in the options below, and this utility will calculate the least common multiple of your numbers. Created by developers for developers.

love fractals?
check out fracal tools!

We just started working on Online Fractal Tools — utilities for doing fractaly things. Check it out!

*fullscreen*

*fullscreen_exit*

A link to this tool, including input, options and all chained tools.

Can't convert.

Lcm finder tool
What is a lcm finder?

This is an online browser-based utility for finding the least common multiple of numbers. The least common multiple (LCM) of two integers a and b is the smallest positive integer that is divisible by both a and b at the same time. The least common multiple of more than two numbers is the smallest positive integer that divides all of these numbers. LCM is also often called the lowest common multiple or smallest common multiple (SCM). One of the main applications of LCM is reducing fractions to a common denominator. The LCM can be found using several different methods. The first way is by utilizing prime factorization. If the numbers are decomposed into prime factors, then the LCM is the product of factors that are included in at least one of the numbers. The second method uses the relationship between the GCD and the LCM and is calculated as following LCM(a, b) = |axb|/GCD(a, b). In this tool, we use the second method to find the LCM. If you supply more than two numbers we use the extended LCM formula and apply it to all the numbers. You can also use the "Flowing LCM" option to see how the LCM changes as it's calculated for more and more numbers. That's numberwang!

Lcm finder examples
Click to use

LCM of 12 and 40

In this example, we calculate the LCM of two numbers. Let's try to find it using the prime factorization method. First, decompose the numbers into prime divisors. For 12 it is 2, 2, 3, for 40 it is 2, 2, 2, 5. Then, multiply factors, that are included in at least one of two numbers: 2 * 2 * 2 * 3 * 5 = 120. So, the number 120 is the LCM of 12 and 40. Using the second method we get the same result: LCM(12, 40) = |12x40|/GCD(12, 40) = 480/4 = 120.

12
40

120

**Required options**

Enter the character that
separates the numbers in
the input.
(By default a line break.)

Display LCMs as it's calculated.
(Most useful with 3 and
more numbers.)

LCM of Prime Numbers

In this example, we find the LCM of five prime numbers at once. Each prime number has only two divisors – 1 and the number itself. From this fact, it follows that the least common multiple of the given numbers is equal to their product. That is, LCM(2, 3, 5, 7, 11) = 2 * 3 * 5 * 7 * 11 = 2310.

2 3 5 7 11

2310

**Required options**

Enter the character that
separates the numbers in
the input.
(By default a line break.)

Display LCMs as it's calculated.
(Most useful with 3 and
more numbers.)

Running LCM

In this example, we activate the "Flowing LCM" option and get a list of running LCMs during the calculation. That is, we get a list of the following values: LCM(60, 40) = 120, LCM(120, 30) = 120, LCM(120, 1000) = 3000, LCM(3000, 1050) = 21000.

60
40
30
1000
1050

60
120
120
3000
21000

**Required options**

Enter the character that
separates the numbers in
the input.
(By default a line break.)

Display LCMs as it's calculated.
(Most useful with 3 and
more numbers.)

Pro tips
Master online number tools

You can pass input to this tool via

__?input__query argument and it will automatically compute output. Here's how to type it in your browser's address bar. Click to try!
https://onlinenumbertools.com/find-least-common-multiple

__?input__=12%0A40&separator=%5Cn&running-lcm=false
All number tools

Quickly create a list of numbers in arithmetic series.

Quickly create a list of numbers in geometric series.

Quickly calculate the coefficients of the binomial expansion.

Quickly create a downloadable image from numbers.

Quickly create a list of random numbers.

Quickly create a list of random primes from a specific interval.

Quickly create a matrix with random numbers as its elements.

Quickly create a random row or column vector.

Quickly exchange rows and columns of a matrix.

Quickly find the inverse matrix of any square matrix.

Quickly find the determinant of any square matrix.

Quickly calculate any number of digits of number π.

Quickly generate the specified number of Euler constant's digits.

Quickly generate any number of golden ratio digits.

Quickly generate numbers of say what you see sequence.

Quickly calculate numbers of Fibonacci sequence.

Quickly calculate numbers of Lucas series.

Quickly generate Fibonacci-like series with custom start values.

Quickly calculate members of a linear recurrence series.

Quickly create a sequence of prime numbers.

Quickly check if the given number is a prime.

Quickly compute all prime factors of a number.

Quickly compute all divisors of a number.

Quickly calculate the GCD of two or more numbers.

Quickly calculate the LCM of two or more numbers.

Quickly create a list of increasing or decreasing integers.

Quickly create a sequence of even numbers.

Quickly create a sequence of odd numbers.

Quickly create a list of squares.

Quickly create a list of cubes.

Quickly generate a series of numbers in the form 2^n.

Quickly generate a series of numbers in the form 10^n.

Quickly choose one or more numbers from a list of numbers.

Quickly round one or more numbers to the given accuracy.

Quickly sort numbers in ascending or descending order.

Quickly sort number's digits in ascending or descending order.

Quickly randomize the order of digits in a number.

Quickly filter numbers according to certain criteria.

Quickly add up all the numbers in the given list and find their sum.

Quickly multiply all the given numbers together and find their product.

Quickly add up all the digits of the given numbers.

Quickly multiply all the digits of the given numbers.

Quickly create a diagonal matrix with ones on the main diagonal.

Quickly convert a number to the form 2^x.

Quickly express a number in the form 10^x.

Quickly add digits to a number so that it becomes a palindrome.

Quickly test if the given numbers are palindromes.

Coming soon
These number tools are on the way

Generate Numberwang Numbers

Create a list of numberwang numbers.

Rewrite Numbers

Given numbers and a grammar, recursively rewrite them.

Generate Powers of 10

Create a list of numbers that are powers of ten.

Create a Floating Point Number

Create a number from the mantissa, base and exponent.

Convert a Number to the Scientific Notation

Convert a number to the a*10^b form.

Convert Scientific Notation to a Number

Convert a number in scientific notation to a regular number.

Generate Random Binary Numbers

Create a list of random binary numbers.

Generate Random Octal Numbers

Create a list of random octal numbers.

Generate Random Decimal Numbers

Create a list of random decimal numbers.

Generate Random Hex Numbers

Create a list of random hexadecimal numbers.

Calculate a Running Sum

Calculate a cumulative sum of a list of numbers.

Calculate a Running Product

Calculate a cumulative product of a list of numbers.

Find the Maximal Number

Find the largest number in a number sequence.

Find the Minimal Number

Find the smallest number in a number sequence.

Calculate the Factorial

Find the factorial of a number.

Generate Number Bigrams

Create a list of digit bigrams from a number.

Generate Number Trigrams

Create a list of digit trigrams from a number.

Generate Number N-grams

Create a list of digit ngrams from a number.

Analyze a Number

Report how many digits appear how many times.

Convert a Number to an Ordinal

Convert a cardinal number to an ordinal number.

Convert an Ordinal to a Number

Convert an ordinal number to a cardinal number.

Convert a Number to Words

Express a number in English words.

Convert Words to a Number

Rewrite English words to numbers.

Convert a Number to Roman Number

Convert Arabic numerals to Roman numerals.

Convert a Roman Number to Regular Number

Convert Roman Numerals to Arabic numerals.

Generate Negafibonacci Numbers

Calculate a series of extended Fibonacci numbers.

Generate Fibonacci Primes

Find numbers that are both Fibonacci numbers and primes.

Fibonacci Number Test

Check if a number is a Fibonacci number.

Fibonacci Prime Test

Check if a number is both a Fibonacci number and a prime.

Construct Fibonacci Words

Create a sequence of Fibonacci words.

Construct Tribonacci Words

Create a sequence of Tribonacci words.

Generate Negalucas Numbers

Calculate a series of extended Lucas numbers.

Generate Lucas Primes

Calculate a series of extended Lucas numbers.

Lucas Prime Test

Check if a number is both a Lucas number and a prime.

Calculate the Trace of a Matrix

Find the sum of main diagonal elements of a matrix.

Calculate the Eigenvalues of a Matrix

Find the eigenvalues of a matrix.

Multiply Matrices

Compute the product of two matrices.

Add Matrices

Compute the sum of two matrices.

Subtract Matrices

Compute the difference of two matrices.

Generate Moser de Bruijn Numbers

Calculate a sequence of Moser-Bruijn numbers.

Generate Kolakoski Numbers

Calculate a sequence of Oldenburger-Kolakoski numbers.

Generate Gijswijt Numbers

Calculate a sequence of self-describing Gijswijt numbers.

Generate Rudin-Shapiro Numbers

Calculate a sequence of Rusin-Shapiro numbers.

Generate Baum-Sweet Numbers

Calculate a sequence of Baum-Sweet numbers.

Generate Thue-Morse Sequence

Calculate members of Thue-Morse number series.

Generate Perfect Numbers

Create a list of perfect numbers.

Generate Almost Perfect Numbers

Create a list of almost perfect numbers.

Generate Excessive Number Sequence

Calculate a sequence of abundant numbers.

Generate Deficient Number Sequence

Calculate a sequence of deficient numbers.

Calculate Dragon Curve Numbers

Generate a list of paperfolding sequence numbers.

Generate Composite Numbers

Create a list of numbers that are not prime.

Test if a Number is Perfect

Check if the given number is a perfect number.

Test if a Number is Abundant

Check if the given number is an abundant number.

Test if a Number is Deficient

Check if the given number is a deficient number.

Calculate the Modulo

Find the modulus of a number.

Group Number Digits

Group together digits of a number.

Split a Number into Digits

Create a list of digits from a number.

Printf Numbers

Apply sprintf or printf function to numbers.

Create Zalgo Numbers

Let Zalgo destroy your numbers.

Mirror a Number

Create a mirror copy of a number.

Reverse a Number

Reverse the order of digits of a number.

Rotate a Number

Cyclically rotate digits of a number to the left or right.

Increase All Digits in a Number

Add one to every digit in a number.

Decrease All Digits in a Number

Subtract one from every digit in a number.

Calculate Percentages

Find x% of a number.

Generate Natural Numbers

Create a list of natural numbers.

Generate Rational Numbers

Create a list of rational numbers.

Generate Real Numbers

Create a sequence of real numbers.

Generate Complex Numbers

Create a list of complex numbers.

Generate Binary Numbers

Create a sequence of binary numbers.

Generate Pairs of Numbers

Create a sequence of number pairs.

Convert a Fraction to a Decimal

Convert a fraction to a decimal number.

Convert a Decimal to a Fraction

Convert a decimal number to a fraction.

Convert a Binary Number to Octal Number

Convert a base two number to base eight number.

Convert a Binary Number to Decimal Number

Convert a base two number to base ten number.

Convert a Binary Number to Hex Number

Convert a base two number to base sixteen number.

Convert a Octal Number to Binary Number

Convert a base eight number to base two number.

Convert a Octal Number to Decimal Number

Convert a base eight number to base ten number.

Convert a Octal Number to Hex Number

Convert a base eight number to base sixteen number.

Convert a Decimal Number to Binary Number

Convert a base ten number to base two number.

Convert a Decimal Number to Octal Number

Convert a base ten number to base eight number.

Convert a Decimal Number to Hex Number

Convert a base ten number to base sixteen number.

Convert a Hex Number to Binary Number

Convert a base sixteen number to base two number.

Convert a Hex Number to Octal Number

Convert a base sixteen number to base eight number.

Convert a Hex Number to Decimal Number

Convert a base sixteen number to base ten number.

Convert Any Number to Any Base

Convert any number in any base to any other base.

Change Number's Mantissa

Change the significand of a number.

Change Number's Base

Change the base of a number.

Change Number's Exponent

Change the power of a number.

Numberwang Number Test

Test if the given number is numberwang.

Subscribe!
Never miss an update

Cool!

Notifications
We'll let you know when we add this tool

Cool!