What is a Logarithm?

A logarithm is the inverse of exponentiation. Simply put, the logarithm of a number Y to a base B is the exponent X to which the base must be raised to produce that number Y (B^X = Y).

Enter the number you want to calculate the logarithm of in the 'Number' field. Then, enter the base you wish to use (e.g., 10 for common logarithm, 2.718 for natural logarithm (e), or 2 for binary logarithm). Click 'Calculate Logarithm'.