Logarithm Calculator
log base 10, ln (natural log), log₂, and arbitrary-base logarithms — plus antilog.
Inputs
Results
Formulas
Change of base
log_b(x) = ln(x) / ln(b)
Antilog
10^x or e^x or b^x
Product rule
log(ab) = log(a) + log(b)
Power rule
log(a^n) = n · log(a)
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