An Overview of ROUNDDOWN Function  Microsoft Excel
The ROUNDDOWN function is one of the math and trigonometry functions in Microsoft Excel. It can be used as a standalone function as well as in collaboration with the other functions. This article will give you an overview of the ROUNDDOWN function in Excel.
Objectives
The ROUNDDOWN function is used to round down a numerical value to a specific decimal place.
Syntax
=ROUNDDOWN(number, num_digits)
Arguments
 number: It refers to the number to round off.
 num_digits: The total number of digits that you want after the decimal point.
Output
A roundeddown version of the input number.
Examples of ROUNDDOWN Function
Suppose, you have the number 65.593275 in cell A2. You can round down the number to any number using the ROUNDDOWN function. Suppose, you want to round down 65.593275 to 3 decimal places. For that, use the formula:
=ROUNDDOWN(A2,3)
The output will be 65.593.
Here are some examples of the usage of the ROUNDDOWN function.
Usage Guide of ROUNDDOWN Function
Step_1: Start with inserting an equal sign (=) in a blank cell.
Step_2: Then type ROUNDDOWN.
Step_3: Type open parenthesis “(“.
As you type the open parenthesis, Excel shows the syntax of the ROUNDDOWN function.
Step_4: Insert a number to round down.
You can directly insert a number or a cell address that contains a number.
Step_5: Then insert a comma (,).
After inserting the comma, Excel will ask you for the second argument which is the number of digits.
Step_6: Now specify the number of digits that you want after the decimal point.
I want to round down the number to 3 decimal places. So, I have inserted 3 inside the function.
Final Result
The ROUNDDOWN function converts 65.593275 into 65.593. Because here, num_digits is 3 which allows only 3 decimal places after the decimal point.
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Remarks
 The ROUNDDOWN function shows #VALUE! error in the case of nonnumeric values.
 When a number is already rounded down, the ROUNDDOWN function doesn’t work.
Related Rounding Functions
 ROUND Function ⋙ rounds to the given number of decimal places.
 MROUND Function ⋙ rounds to the nearest specified multiple.
 ROUNDUP Function ⋙ rounds up a numerical value to a specific decimal place.
 CEILING Function ⋙ rounds up a numerical value to the nearest integer or the nearest multiple of significance.
 FLOOR Function ⋙ rounds down a numerical value to the nearest multiple of significance.
 INT Function ⋙ rounds down a numerical value to the nearest integer number.
 TRUNC Function ⋙ removes specific digits from the fraction part of a number.
Conclusion
The ROUNDDOWN function is one of the math and trigonometry functions in Excel. If you have any questions regarding the ROUNDDOWN function, please comment below. Thanks!