Free · Math · Number Theory

Common Factor Calculator

List all positive factors shared by two or more whole numbers.

  • Checked formula
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Calculator inputs

Enter your values

Result

Your calculation

Common factors
1, 2, 3, 4, 6, 12
6 shared factors
Greatest common factor
12

How to use this calculator

  1. Enter the known values using the units shown.
  2. Choose the calculation you want when more than one method is available.
  3. Calculate, then review the result and the worked formula together.

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Inputs and results stay in this browser tab. Bookify does not upload or store the values you enter.