Logarithm Calculator
Enter a positive value and a valid logarithm base to calculate log base b of x.
What is a logarithm?
A logarithm answers what exponent is required to turn a base into a given value. For example, log₂(8) = 3 because 2³ = 8.
Common and natural logarithms
The common logarithm uses base 10 and the natural logarithm uses base e. Both are available in the scientific calculator.
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