How to use the ISERROR function in Excel

In this article, we will learn How to use the ISERROR function in Excel.

What is the ISERROR function ?

Whenever we operate formulas in Excel. Sometimes we get error values in response in Excel. But we don't want to see different error values. Instead, we will return output we want like value not found or value not existed. So excel assist us with a function which do not any return error values when used. This function over rules all error values like #N/A, #VALUE!, #REF!, #DIV/0!, #NUM!, #NAME?, or #NULL!.

ISERROR Function in Excel

ISERROR function checks for various errors in the condition like #N/A, #VALUE!, #REF!, #DIV/0!, #NUM!, #NAME?, or #NULL!.


=ISERROR( formula or operation )

Formula: perform the operation inside the parentheses

Example :

All of these might be confusing to understand. Let's understand how to use the function using an example. Here we have two tables named 1st Data set and 2nd Dat set.

Write the VLOOKUP formula in H7 cell.

=IF(ISERROR(VLOOKUP(G3,$A$2:$B$13,2,FALSE)),"Not Exist", VLOOKUP(G3,$A$2:$B$13,2,FALSE))


Vlookup function checks the condition for the 2nd column of the 1st Data set matching EMP CODE in 1st Data set.

ISERROR function looks for any error and passes it on to the IF function.

IF function checks if an error occurs, it print “Not Exist” instead of the error.

Copy the formula in other cells, select the cells taking the first cell where the formula is already applied, use shortcut key Ctrl + D.

As you can see in the above image that formula is working fine. And the user can work without getting irritated by any error. If ISERROR function is not used, vlookup returning n/a error is the output.

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