MS Excel: Ln Function
In Excel, the Ln function returns the natural logarithm of a number.
The syntax for the Ln function is:
Ln( number )
number is a numeric value that must be greater than 0.
Applies To:
- Excel 2007, Excel 2003, Excel XP, Excel 2000
For Example:
Let's take a look at an example:

Based on the Excel spreadsheet above:
=Ln(A1) would return 2.995732274 =Ln(A2) would return 3.218875825 =Ln(A3) would return 4.605170186 =Ln(200) would return 5.298317367