# MS Excel: ISERR Function (WS)

This Excel tutorial explains how to use the Excel ISERR function with syntax and examples.

## Description

The Microsoft Excel ISERR function can be used to check for error values.

## Syntax

The syntax for the ISERR function in Microsoft Excel is:

`ISERR( value )`

### Parameters or Arguments

value
The value that you want to test. If value is an error value (except #N/A), this function will return TRUE. Otherwise, it will return FALSE.

## Applies To

The ISERR function can be used in the following versions of Microsoft Excel:

• Excel 2016, Excel 2013, Excel 2011 for Mac, Excel 2010, Excel 2007, Excel 2003, Excel XP, Excel 2000

## Type of Excel Function

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

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

```=ISERR(A1)
Result: TRUE

=ISERR(A2)
Result: FALSE

=ISERR(A3)
Result: TRUE

=ISERR(A4)
Result: FALSE

=ISERR("www.techonthenet.com")
Result: FALSE

=ISERR(3/0)
Result: TRUE```

Question: Can you give me specific examples of when and how the ISERR function is used. Specifically, in a worksheet why would I use this function instead of just running down a column or across a row to look for the errors?

Answer: Often times your spreadsheet contains a large amount of formulas which will not properly calculate when an error is encountered. The ISERR function, in combination with the If function, can be used to default a cell's value when an error is occurred. This allows your formulas to evaluate properly without your intervention.

For example, you may encounter a scenario below:

`=B4/C4`
`=IF(ISERR(B4/C4),0,B4/C4)`