totn Excel Functions

MS Excel: How to use the FLOOR Function (WS)

This Excel tutorial explains how to use the Excel FLOOR function with syntax and examples.

Description

The Microsoft Excel FLOOR function returns a number rounded down based on a multiple of significance.

The FLOOR function is a built-in function in Excel that is categorized as a Math/Trig Function. It can be used as a worksheet function (WS) in Excel. As a worksheet function, the FLOOR function can be entered as part of a formula in a cell of a worksheet.

Syntax

The syntax for the FLOOR function in Microsoft Excel is:

FLOOR( number, significance )

Parameters or Arguments

number
The number that you wish to round down.
significance
The multiple of significance that you wish to round a number to.

Returns

The FLOOR function returns a numeric value.
If the sign of the number and the significance parameters are different, the FLOOR function will return the #NUM! error.

Applies To

  • Excel for Office 365, Excel 2019, Excel 2016, Excel 2013, Excel 2011 for Mac, Excel 2010, Excel 2007, Excel 2003, Excel XP, Excel 2000

Type of Function

  • Worksheet function (WS)

Example (as Worksheet Function)

Let's look at some Excel FLOOR function examples and explore how to use the FLOOR function as a worksheet function in Microsoft Excel:

Microsoft Excel

Based on the Excel spreadsheet above, the following FLOOR examples would return:

=FLOOR(A1, 1)
Result: 169

=FLOOR(A1, 0.05)
Result: 169.65

=FLOOR(A2, 0.05)
Result: 169.6

=FLOOR(A3, 2)
Result: 2

=FLOOR(A4, 2)
Result: #NUM!

=FLOOR(-4.5, -1)
Result: -4