Calculate common denominator. Our calculator finds the common denominator for you.
This calculator helps you find the common denominator of two fractions. Enter the denominators of the fractions, and our calculator will tell you the lowest common denominator.
The denominator is the bottom number in a fraction. In this example, 2 is the numerator and 3 is the denominator: $$\frac{2}{3}$$
Common Denominator: