The LOG function returns the logarithm of a given number, using a supplied base. The base argument defaults to 10 if not supplied.
Purpose of Excel LOG Function
Get the logarithm of a number.
Return value
The logarithm.
Syntax
=LOG (number,[base])
Arguments
| Arguments | Description | Remarks |
| number | The number for which you want the logarithm. | Mandatory |
| [base] | Base of the logarithm. Defaults to 10. | Optional |
Usage notes
- This function allows you to get the logarithm of a number with a specified base.
Availability
Since 2007 for Windows.
Since 2011 for Mac.