Greatest Common Factor Calculator

Here's a handy little calculator you can use to find the
Greatest Common Factor (GCF) of two or three numbers.

It is the "greatest" thing for simplifying fractions!

numbers/images/gcf-tool.js

Example: Simplify 812

Find the GCF of 8 and 12 (the calculator tells us it is 4).

Divide both top and bottom by 4:

  • 8 ÷ 4 = 2
  • 12 ÷ 4 = 3

So, our simplified fraction is 23

Or maybe you wanted the Least Common Multiple (LCM) Calculator ... ?

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