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Conditional Format that Checks for Data Type

Please Note: This article is written for users of the following Microsoft Excel versions: 97, 2000, 2002, and 2003. If you are using a later version (Excel 2007 or later), this tip may not work for you. For a version of this tip written specifically for later versions of Excel, click here: Conditional Format that Checks for Data Type.

Joshua is trying to establish a conditional format that will alert a user that text data has been entered into a cell intended for numerical data or when numerical data has been input into a cell intended for text data.

A conditional format can be used to draw attention to when an improper value (text or numeric) has been entered in a cell, but a more robust approach might be to prohibit the improper value from being entered in the first place. This can be done with the data validation capabilities of Excel. These capabilities have been discussed, in detail, in other ExcelTips; more information can be found here:

http://excel.tips.net/E165_Data_Validation.html

Using data validation you can specify the type and range of data permitted in a cell, along with how stringently you want that specification followed. If you prefer to not use data validation for some reason, you can set up a conditional format that will verify if the information placed in a cell is of the data type you want. Follow these steps:

  1. Select the cells that you want conditionally formatted.
  2. Choose Conditional Formatting from the Format menu. Excel displays the Conditional Formatting dialog box.
  3. In the drop-down Condition list, choose "Formula Is". (See Figure 1.)
  4. Figure 1. The Conditional Formatting dialog box.

  5. In the formula box, enter the one of the following formulas. (The first is if you want to highlight the cell if it contains text; the second if it contains a number. Make sure you replace A1 with the cell address of the cell in the upper-left corner of the range selected in step 1.)
  6.      =ISTEXT(A1)
         =ISNUMBER(A1)
    
  7. Click on Format. Excel displays the Format Cells dialog box.
  8. Using the controls in the dialog box, specify a format that you want used for those cells selected in step 1. For instance, you may want bold text in a red typeface.
  9. Click on OK to close the Format Cells dialog box.
  10. Click on OK to close the Conditional Formatting dialog box.

ExcelTips is your source for cost-effective Microsoft Excel training. This tip (6906) applies to Microsoft Excel 97, 2000, 2002, and 2003. You can find a version of this tip for the ribbon interface of Excel (Excel 2007 and later) here: Conditional Format that Checks for Data Type.

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Excel Smarts for Beginners! Featuring the friendly and trusted For Dummies style, this popular guide shows beginners how to get up and running with Excel while also helping more experienced users get comfortable with the newest features. Check out Excel 2013 For Dummies today!

 

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