# Excel ISNA Function

This post will guide you how to use Excel ISNA function with syntax and examples in Microsoft excel.

### Description

The Excel ISNA function used to check if a cell contains the #N/A error, if so, returns TRUE; otherwise, the ISNA function returns FALSE. The #N/A error will be returned when a value is not available to your Excel formula.

The ISNA function is a build-in function in Microsoft Excel and it is categorized as an Information Function.

The ISNA function is available in Excel 2016, Excel 2013, Excel 2010, Excel 2007, Excel 2003, Excel XP, Excel 2000, Excel 2011 for Mac.

### Syntax

The syntax of the ISNA function is as below:

`=ISNA(value)`

Where the ISNA function argument is:

• Value – This is a required argument. The value that you want to test.

### Excel ISNA Function Example

The below examples will show you how to use Excel ISNA Function to text if a cell contain the #N/A error. For examples, if the Cell B1 contains #N/A error, the following ISNA formula will return TRUE.

`= ISNA(B1)` ### Related Functions

• Excel ISNUMBER Function
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• Excel ISERR Function
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• Excel ISBlank Function
The Excel ISBLANK function returns TRUE if the value is blank or null.The syntax of the ISBLANK function is as below:=ISBLANK (value)…
• Excel ISTEXT Function
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The Excel ISNONTEXT function used to check if a value is text. If so, returns FALSE; if the text is not text, the function will return TRUE. The syntax of the ISNONTEXT function is as below:=ISNONTEXT (value)…
• Excel ISREF Function
The Excel ISREF function used to check if a value is a valid reference. If so, returns TRUE; if the value is not a reference, the function will return FALSE. The syntax of the ISREF function is as below:=ISREF(value)…

### More Excel ISNA Function Examples

• Excel Vlookup Return True or False
you can use the VLOOKUP function to look for a value in a column in a table and then returns TRUE from a given column in that table if it finds something. If it doesn’t, it returns FALSE …