GCF & LCM Calculator
Greatest common factor and least common multiple of a list.
Tool inputs stay in your browser · optional AI search sends your query
How to use it (step by step)
- 1Fill in the boxes: “Whole numbers”. Example numbers are already there so you can see how it works; replace them with yours.
- 2The result updates instantly as you type (on a phone it is below the boxes).
- 3The bold line is the main answer. Tap Copy next to any value to copy it.
Words to know
- GCD / LCM
- GCD is the biggest number that divides two numbers exactly. LCM is the smallest number both divide into.
- Array / list
- An ordered collection of items, like ["apple", "banana"]. Every programming language has one.
- Daily rate factor (261 / 313 / 365)
- The number of paid days in a year your company uses to turn a monthly salary into a daily rate: 261 for Mon–Fri, 313 for Mon–Sat, 365 if rest days and holidays are paid too.
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