Paste a list of whole numbers and get their least common multiple, the smallest number that every value in the list divides into evenly. The least common multiple is the key to adding fractions with different denominators, scheduling repeating events that line up, and many number theory problems. While plenty of tools only accept two numbers, this one handles a whole list at once by folding the LCM across every value. It uses BigInt arithmetic so the answer stays exact even when combining several numbers pushes the result into very large territory, where floating point would round. Just enter your numbers separated by commas, spaces, or new lines, and the LCM appears instantly. Everything is computed locally in your browser, so your list never leaves your device.
The LCM is the smallest number that every value in your list divides into evenly, so the LCM of 4 and 6 is 12.
Yes. Paste a whole list and the tool finds the least common multiple of all of them together.
Yes. It uses big-integer math so even large least common multiples remain precise.
Paste a list of whole numbers and get their least common multiple, the smallest number that every value in the list divides into evenly. The least common multiple is the key to adding fractions with different denominators, scheduling repeating events that line up, and many number theory problems.
Yes. LCM of a List Calculator is completely free, with no sign-up and no usage limits.
Yes. LCM of a List Calculator runs in any modern web browser. There is nothing to download or install.
Yes. LCM of a List Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.