# LOG10 Function (DAX)

Returns the base-10 logarithm of a number.

## Syntax

```
LOG10(<number>)
```

## Parameters

Term |
Definition |
---|---|

number |
A positive number for which you want the base-10 logarithm. |

## Return Value

A decimal number.

## Remarks

The LOG function lets you change the base of the logarithm, instead of using the base 10.

## Example

The following formulas return the same result, 2:

```
=LOG(100,10)
=LOG(100)
=LOG10(100)
```

## See Also