IFERROR function

This formula will return a specified value if your given expression results in an error.




IFERROR(Expression, Value if error)


  • Expression (required) – This is part of the formula that is checked for an error.
  • Value if error (required) – This is the value that is returned if the expression results in an error (#DIV/0, #N/A, #NAME, #NULL!, #NUM!, #REF!, or #VALUE!).



In this example we want to calculate an average cost per use = cost / # of uses (=A2/B2), however some of the # of uses are 0 and this results in a #DIV/0 error.




We can use the IFERROR function to set the average to 0 when we get a #DIV/0 error by using IFERROR(A2/B2,0).



About the Author

John MacDougall

John MacDougall

John is a Microsoft MVP and freelance consultant and trainer specializing in Excel, Power BI, Power Automate, Power Apps and SharePoint. You can find other interesting articles from John on his blog or YouTube channel.


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