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GCD & LCM Dual Number Calculator

Calculate Greatest Common Divisor and Least Common Multiple.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: Applies the Euclidean algorithm to find the largest shared integer divisor and least common multiple.

How to use it (step by step)

  1. 1Fill in the boxes: “Number A”, “Number B”. Example numbers are already there so you can see how it works; replace them with yours.
  2. 2The result updates instantly as you type (on a phone it is below the boxes).
  3. 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.

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