Returns a number that is rounded down to the nearest integer or to the nearest multiple of significance. Regardless of the sign of the number, the number is rounded down. However, if the number or the significance is zero, zero is returned.
Syntax
FLOOR.PRECISE(number, [significance])
The FLOOR.PRECISE function syntax has the following arguments (argument: A value that provides information to an action, an event, a method, a property, a function, or a procedure.):
 Number Required. The value to be rounded.
 Significance Optional. The multiple to which number is to be rounded.
If significance is omitted, its default value is 1.
Remarks
 The absolute value of the multiple is used, so that the FLOOR.PRECISE function returns the mathematical floor irrespective of the signs of number and significance.
Example
The example may be easier to understand if you copy it to a blank worksheet.
How do I copy an example?
 Select the example in this article. If you are copying the example in Excel Online, copy and paste one cell at a time.
Important: Do not select the row or column headers.
Selecting an example from Help
 Press CTRL+C.
 Create a blank workbook or worksheet.
 In the worksheet, select cell A1, and press CTRL+V. If you are working in Excel Online, repeat copying and pasting for each cell in the example.
Important: For the example to work properly, you must paste it into cell A1 of the worksheet.
 To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.
After you copy the example to a blank worksheet, you can adapt it to suit your needs.

A 
B 
Formula 
Description 
=FLOOR.PRECISE(3.2,1) 
Rounds 3.2 down to the nearest multiple of 1 (4) 
=FLOOR.PRECISE(3.2, 1) 
Rounds 3.2 down to the nearest multiple of 1 (3) 
=FLOOR.PRECISE(3.2, 1) 
Rounds 3.2 down to the nearest multiple of 1 (4) 
=FLOOR.PRECISE(3.2,1) 
rounds 3.2 down to the nearest multiple of 1 (3) 
=FLOOR.PRECISE(3.2) 
Rounds 3.2 down to nearest multiple of 1 (3) 
