Returns the natural logarithm of a number. Natural logarithms are based on the constant e (2.71828182845904).
The positive real number for which you want the natural logarithm.
LN is the inverse of the EXP function.
To make the following example easier to understand, you can copy the data to a blank sheet and then enter the function underneath the data. Do not select the row or column headings (1, 2, 3... A, B, C...) when you copy the sample data to a blank sheet.