FLOOR
Applies to: 
Calculated column
Calculated table
Measure
Visual calculation
Rounds a number down, toward zero, to the nearest multiple of significance.
Syntax
FLOOR(<number>, <significance>)
Parameters
| Term | Definition |
|---|---|
number |
The numeric value you want to round. |
significance |
The multiple to which you want to round. The argumentsnumber and significance must either both be positive, or both be negative. |
Return value
A decimal number.
Remarks
If either argument is nonnumeric, FLOOR returns
#VALUE!error value.If number and significance have different signs, FLOOR returns the
#NUM!error value.Regardless of the sign of the number, a value is rounded down when adjusted away from zero. If the number is an exact multiple of significance, no rounding occurs.
This function is not supported for use in DirectQuery mode when used in calculated columns or row-level security (RLS) rules.
Example
The following formula takes the values in the [Total Product Cost] column from the table, InternetSales, and rounds down to the nearest multiple of .1.
= FLOOR(InternetSales[Total Product Cost],.1)
The following table shows the expected results for some sample values:
| Values | Expected Result |
|---|---|
| 10.8423 | 10.8 |
| 8.0373 | 8 |
| 2.9733 | 2.9 |