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MS Excel: ROUNDDOWN Function (WS)

Learn how to use the Excel ROUNDDOWN function with syntax and examples.


The Microsoft Excel ROUNDDOWN function returns a number rounded down to a specified number of digits. (Always rounds towards 0.)


The syntax for the Microsoft Excel ROUNDDOWN function is:

ROUNDDOWN( number, digits )

Parameters or Arguments

number is the number to round down.

digits is the number of digits to round the number down to.

Applies To

The ROUNDDOWN 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 ROUNDDOWN 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 ROUNDDOWN function examples and explore how to use the ROUNDDOWN function as a worksheet function in Microsoft Excel:

Microsoft Excel

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

=ROUNDDOWN(A1, 0) would return 662
=ROUNDDOWN(A1, 1) would return 662.7
=ROUNDDOWN(A2, -1) would return 50
=ROUNDDOWN(55.1, -1) would return 50
=ROUNDDOWN(-23.67, 1) would return -23.6