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Math Calculators
Natural Log Calculator
Calculate the natural logarithm (ln), the logarithm base e, of any positive number.
ln(x)
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About the Natural Log Calculator
The natural logarithm is the logarithm to the base e (approximately 2.71828), Euler's number. It answers "to what power must e be raised to get this number?"
Formula: ln(x) = loge(x)
The natural log appears throughout calculus, continuous growth and decay models, and probability, because e arises naturally from continuous compounding.
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