How To Round Numbers Down In Excel With The Rounddown Function

The syntax for the ROUNDDOWN function is  = ROUNDDOWN (Number, Num_digits) The arguments for the function are: Number — (required) the value to be rounded. This argument can contain the actual data for rounding, or it can be a cell reference to the location of the data in the worksheet. Num_digits — (required) the number of digits to which the Number argument will be rounded.

If the Num_digits argument is set to 0, the function rounds the value down to the nearest integer.If the Num_digits argument is set to 1, the function leaves only one digit to the right of the decimal point and rounds it down to the next number.If the Num_digits argument is negative, all decimal places are removed, and the function rounds that number of digits to the left of the decimal point towards zero. For example, if the value of the Num_digits argument is set to -2, the function removes all digits to the right of the decimal point, rounding the first and second digits to the left of the decimal point down to the nearest 100.

The image above displays examples and gives explanations for several results returned by Excel’s ROUNDDOWN function for data in column A of the worksheet. The results (shown in column C) depend upon the value of the Num_digits argument. The instructions below detail the steps taken to reduce the number in cell A2 in the image above to two decimal places using the ROUNDDOWN function. Because the function always rounds down, the rounding digit does not change.

 

Typing the complete function: =ROUNDDOWN(A2,2) into cell C3 in the worksheet;Selecting the function and arguments using the function’s dialog box.

Using the dialog box simplifies entering the function’s arguments. With this method, it is not necessary to enter commas between each of the function’s arguments. The steps below show how to enter the ROUNDDOWN function using the dialog box in Excel 2019, Excel 2016, Excel 2013, Excel 2010, and Excel for Mac. When you select cell C2, the complete function =ROUNDDOWN(A2,2) appears in the formula bar above the worksheet. Excel Online does not have a Formulas tab. To use the ROUNDDOWN function in Excel Online, use the Formula bar.  When you select cell C2, the complete function =ROUNDDOWN(A2,2)  appears in the formula bar above the worksheet.