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Calculators: Logarithm | Ratio | Doubling | Tenfold | Multifold

# Calculate Logarithm

The logarithm for an user-defined base can be calculated as well as all inverse calculations. The logarithm is the inverse operation to the exponentiation (power function).

## Formulas: log_{b}(a)=x, a=b^{x}

Insert two values, the third value will be calculated. Input values can be numbers e as Euler's number. The maximal value for the decimal places is 15.

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German: Logarithmus berechnen

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