Last updated: August 26, 2026.
The Log function returns the natural logarithm of a positive number.
Syntax
Log(number)| Argument | Description |
|---|---|
number | Positive numeric expression |
Examples
Log(1) ' 0
Log(10) ' Natural logarithm of 10
Log10Value: Log([Value]) / Log(10)The argument must be greater than zero. To calculate a logarithm in another base, divide Log(number) by Log(base).
See Microsoft’s Access function reference for related expression functions.
