IFERROR function
This article describes the formula syntax and usage of the IFERROR function in Microsoft Excel.
Description
Returns a value you specify if a formula evaluates to an error; otherwise, returns the result of the formula. Use the IFERROR function to trap and handle errors in a formula.
Syntax
IFERROR(value, value_if_error)
The IFERROR function syntax has the following arguments:

Value Required. The argument that is checked for an error.

Value_if_error Required. The value to return if the formula evaluates to an error. The following error types are evaluated: #N/A, #VALUE!, #REF!, #DIV/0!, #NUM!, #NAME?, or #NULL!.
Remarks

If value or value_if_error is an empty cell, IFERROR treats it as an empty string value ("").

If value is an array formula, IFERROR returns an array of results for each cell in the range specified in value. See the second example below.
Examples
Example: Trapping division errors by using a regular formula
The example may be easier to understand if you copy it to a blank worksheet.
How do I copy an example?

Select the example in this article.
Important Do not select the row or column headers.
Selecting an example from Help

Press CTRL+C.

In Excel, create a blank workbook or worksheet.

In the worksheet, select cell A1, and press CTRL+V.
Important For the example to work properly, you must paste it into cell A1 of the worksheet.

To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.
After you copy the example to a blank worksheet, you can adapt it to suit your needs.


Example: Trapping division errors by using an array formula
The example may be easier to understand if you copy it to a blank worksheet.
How do I copy an example?

Select the example in this article.
Important Do not select the row or column headers.
Selecting an example from Help

Press CTRL+C.

In Excel, create a blank workbook or worksheet.

In the worksheet, select cell A1, and press CTRL+V.
Important For the example to work properly, you must paste it into cell A1 of the worksheet.

To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.
After you copy the example to a blank worksheet, you can adapt it to suit your needs.


Note The formula in the example must be entered as an array formula. After copying the example to a blank worksheet, select the range C2:C4, press F2, and then press CTRL+SHIFT+ENTER.