Free Online Calculators

Log Calculator

Calculate log base 10, natural log (ln), log base 2, or any custom base.

Logarithm Calculator
Result
—
log₁₀(x)—
ln(x)—
log₂(x)—
Antilog (10^result)—

Logarithm Rules

log(ab) = log(a)+log(b) | log(a/b) = log(a)−log(b) | log(aⁿ) = n×log(a) | log_b(x) = ln(x)/ln(b)

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