The Excel LN function calculates the natural logarithm of a given number.
The format of the function is:
where the number argument is a positive real number that you want to calculate the natural logarithm of.
In the example below, the Excel Ln function is used to calculate the natural logarithms of three different numbers, 1, 100 and 0.5:
Further examples of the Excel Ln function can be found on the Microsoft Office website.
If you get an error from your Excel Ln function, this is likely to be one of the following:
|#NUM!||-||Produced if the supplied number argument is negative or zero.|
|#VALUE!||-||Produced if the supplied number argument is not a numeric value.|