Correct a #NUM! error

This error indicates that a formula or function contains invalid numeric values.


Excel displays #NUM! in one or more cells on a worksheet.


  • You may have used an unacceptable argument in a function that requires a numeric argument.

  • You may have used a worksheet function that iterates, such as IRR or RATE, and the function cannot find a result.

  • You may have entered a formula that produces a number that is too large or too small to be represented in Excel.


  • Optionally, if error checking is turned on in Excel, click the button that appears next to the cell that displays the error Button Image, click Show Calculation Steps if it appears, and then click the resolution that is appropriate for your data.

    Tip   Review the following resolutions to help determine which option to click.

  • Make sure that the arguments that are used in the function are numbers. For example, even if the value that you want to enter is $1,000, enter 1000 in the formula.

  • Use a different starting value for the worksheet function.

  • Change the number of times that Excel iterates formulas by doing the following:

    1. Click the Microsoft Office Button Office button image, click Excel Options, and then click the Formulas category.

    2. Under Calculation options, select the Enable iterative calculation check box.

    3. To set the maximum number of times that Excel will recalculate, type the number of iterations in the Maximum Iterations box. The higher the number of iterations, the more time that Excel needs to calculate a worksheet.

    4. To set the maximum amount of change that you will accept between calculation results, type the amount in the Maximum Change box. The smaller the number, the more accurate the result and the more time that Excel needs to calculate a worksheet.

  • Change the formula so that its result is between -1*10307 and 1*10307.

Applies To: Excel 2007

Was this information helpful?

Yes No

How can we improve it?

255 characters remaining

To protect your privacy, please do not include contact information in your feedback. Review our privacy policy.

Thank you for your feedback!

Support resources

Change language