Today in this article I will discuss with you about Floor Function which is categorized as Math function in Microsoft Excel.
Let us first understand what Floor function does !!!
In simple words it rounds down a number, your next question is
what is the difference between ROUND and FLOOR function or what is the
difference between ROUNDDOWN and FLOOR function.
The difference is FLOOR
Function rounds a number down, towards zero, to the nearest multiple of 'Significance'.
It seems a little bit complicated but trust me after reading
this article you will be able to understand and use the Floor function. Let us
first understand the Syntax of this function.
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.
Example:
We will use an example to understand FLOOR function.
Suppose, we have a list of a sales team with their monthly
sales. Each sales representative is allotted with the incentive price for every
$1000 sales which is 5% of the relevant
sales amount, now we need to calculate the incentive amount that will be
paid to the representative as an incentive at the end of the month.
So if we tabulate this problem, it will be like below.
To find the relevant sales which have to be the nearest multiple of 1000, we will use the FLOOR function in
excel with a nearest factor of 1000.
The formula will be : =FLOOR(C3,1000)
The first part of the problem is done, now we will also
calculate the second part of the said problem by simply multiplying it by 5%.
I think you have fully understood where and how to use floor
function, in the above example we used FLOOR function in excel to deal with
significant value and it is also useful in calculations for currency
conversions, discounts.
How to use Floor Function in Excel |
Note :
v If the number to be rounded is a positive number, the FLOOR
function will round the value towards zero, that is it will lower the value of
the number as much possible to the nearest significant factor.
v If the number is a negative number the FLOOR function will
round the value away from the zero.
v If the number is the exact multiple of the significant value,
there will be no rounding of the number and FLOOR Function will return the same
value.
v The FLOOR function in Excel throws #NUM! error, when the
number is positive and significance is a negative value, it throws #DIV/0!
Error when the significant value is 0 because the function iterates the value
by dividing the multiple until it gets the lowest value that is 0 and
divisibility by 0 means error and the Excel FLOOR function also throws an error
when either of the argument is not numeric.
v In the previous version of Excel (2003 and 2007), the number
and the significant values should have the same sign, else the excel FLOOR
function would return an error, however, this limitation of FLOOR function has
been improvised in the latest version of Excel (2010 and later), now it can
round off a negative number with a positive significance.
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