ISERROR

The ISERROR function in Google Sheets checks whether a value or formula result is an error, returning TRUE or FALSE. It's a fundamental building block for writing formulas that gracefully handle unexpected errors instead of displaying error codes to your users. Dive into our comprehensive guide to master its application.

Parameters

• value: The value or formula you want to test for an error.

Step-by-Step Tutorial

1. Checking a formula for errors:

   • Example: =ISERROR(1/0)
   • Result: TRUE

2. Combining ISERROR with IF:

   • Example: =IF(ISERROR(A1/B1), "Error", A1/B1)
   • Result: will return "Error" if the division fails, otherwise the calculated value.

Use Cases and Scenarios

1. Error-Safe Formulas: Prevent error codes like #DIV/0! or #N/A from displaying in reports.
2. Data Validation: Flag rows where a lookup or calculation failed.
3. Dashboard Building: Ensure downstream calculations don't break when upstream data is missing or invalid.

Related Functions

• IFERROR: Returns a specified value if a formula returns an error, otherwise returns the formula's result.
• ISNA: Checks whether a value is the #N/A error.
• ISERR: Checks whether a value is an error other than #N/A.

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