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Roger is wondering if there is way to use the COUNTIF function using the cell background color as the "if" criteria. He has a calendar and he wants to be able to count the number of days he highlights in purple or other colors.
The short answer is that COUNTIF cannot be used to check for background color or any formatting; it can only test for values. If you only need to figure out the number of purple cells once or twice, you can use Excel's Find and Replace feature to figure it out. Follow these steps:
Figure 1. The Find tab of the Find and Replace dialog box.
Figure 2. The Find Format dialog box.
Of course, these steps might get tedious if you want to count more than a color or two. Or, you may want the count so you can use it in a different calculation of some type. In these instances you would do better to create a user-defined function that examines the cells and returns a count. One such macro is CountColorIf:
Function CountColorIf(rSample As Range, rArea As Range) As Long Dim rAreaCell As Range Dim lMatchColor As Long Dim lCounter As Long lMatchColor = rSample.Interior.Color For Each rAreaCell In rArea If rAreaCell.Interior.Color = lMatchColor Then lCounter = lCounter + 1 End If Next rAreaCell CountColorIf = lCounter End Function
In order to use the macro, all you need to do is provide a cell that has the background color you want tested and the range to be tested. For instance, let's say that cell A57 is formatted with the same purple background color you use in your calendar cells. If the calendar is located in cells A1:G6, then you could use the following to get the count of purple cells:
It should be noted that if you change the color in a cell in your calendar, then you'll need to do something to force a recalculation of the worksheet. It seems that Excel doesn't do an automatic recalculation after changing background color.
There are, of course, many different ways you could approach the problem and develop user-defined functions such as CountColorIf. Here are a few other websites that contain information that may be helpful in this regard:
http://www.cpearson.com/excel/colors.aspx http://www.ozgrid.com/VBA/sum-count-cells-by-color.htm http://xldynamic.com/source/xld.ColourCounter.html http://www.techrepublic.com/blog/windows-and-office/conditional-formatting-tricks-sum-values-in-excel-by-cell-color/
There are also some third-party add-ons available that you could use. One such add-on suggested by readers is Kutools for Excel. You can find more information on the add-on here:
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