Returns the logarithm of a number to the base you specify.
Syntax
LOG(number,base)
Number is the positive real number for which you want the logarithm.
Base is the base of the logarithm. If base is omitted, it is assumed to be 10.
Example
The example may be easier to understand if you copy it to a blank spreadsheet.
How?- Create a blank spreadsheet.
- Select the example in the Help topic.
Selecting an example from Help
- Press CTRL+C.
- In the spreadsheet, select cell A1, and press CTRL+V.
- To switch between viewing the formula that returns the result and the result in the cell, select the cell and press F2 and then ENTER, or click Commands and Options on the spreadsheet toolbar, click the Formula tab, and look in the Formula in active cell (active cell) box.
| Formula | Description (Result) |
|---|---|
| =LOG(10) | Logarithm of 10 (1) |
| =LOG(8, 2) | Logarithm of 8 with base 2 (3) |
| =LOG(86, 2.7182818) | Logarithm of 86 with base e (4.454347) |