Logarithm Calculator

Calculate log base b of x, using the change-of-base formula to support any positive base.

Inputs
Results
log_base(x)
2

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Formula

log_b(x) = ln(x) / ln(b)

Learn How This Works

Exponents and Logarithms: Inverse Operations Explained

How exponent and logarithm calculations relate to each other, with the change-of-base formula worked through.

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