How to use the Excel ISERROR function

Summary

The Excel ISERROR function returns TRUE for any error type that excel generates, including #N/A, #VALUE!, #REF!, #DIV/0!, #NUM!, #NAME?, or #NULL! You can use the ISERR function together with the IF function to test for an errors and display a custom message, or run a different calculation when found.

Purpose

Test for any error

Return value

A logical value (TRUE or FALSE)

Syntax

=ISERROR (value)

Arguments

value - The value to check for any error.

Usage notes

Use the ISERROR function to see if a cell contains any error message, including #N/A, #VALUE!, #REF!, #DIV/0!, #NUM!, #NAME?, or #NULL!

For example, =ISERROR(A1) will return TRUE if A1 is is displaying an one of the errors mentioned above , and FALSE if not.

Frequently, value is supplied as a cell address, but you can use it to trap errors inside more complex formulas as well.

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