# MS Excel: 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.

## Syntax

The syntax for the Microsoft Excel FLOOR function is:

`FLOOR( number, significance )`

### Parameters or Arguments

number is the number that you wish to round down.

significance is the multiple of significance that you wish to round a number to.

## Note

• If the sign of the number and the significance parameters are different, the FLOOR function will return the #NUM! error.

## Applies To

The FLOOR function can be used in the following versions of Microsoft Excel:

• Excel 2013, Excel 2011 for Mac, Excel 2010, Excel 2007, Excel 2003, Excel XP, Excel 2000

## Type of Excel Function

The FLOOR function can be used in Microsoft Excel as the following 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:

Based on the spreadsheet above, the following Excel 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```
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