Math and Trignometric - LN Function

Description

The LN function returns the natural logarithm of a number. Natural logarithms are based on the constant e (2.71828182845904).

Syntax

LN (number)

Arguments

Argument Description Required/Optional
Number The positive real number for which you want the natural logarithm. Required

Notes

  • The Natural Logarithm of a number, written as Ln(x) or Loge(x), is the logarithm to the base e

    If ex = y, then Ln(y) = x

  • Thus, LN is the inverse of the EXP Function.

  • If the specified number is negative or zero, LN returns #NUM! error.

  • If the specified number is not a numeric value, LN returns #VALUE! Error.

Applicability

Excel 2007, Excel 2010, Excel 2013, Excel 2016

Example

LN Function
advanced_excel_math_trigonometric_functions.htm
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