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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: Counting Times within a Range.
William has a list of times in column A. He needs a way to find how many of the times fall within a time range, such as between 8:30 am and 9:00 am. He tried using COUNTIF and a few other functions, but couldn't get the formulas to work right.
There are actually a few different ways you can count the times within the desired range, including using the COUNTIF function. In fact, here are two different ways you could construct the formula using COUNTIF:
Either one will work fine; they only differ in how the starting and ending times for the range are specified. The key to the formulas is to grab a count of the times that are greater than the earliest boundary of the range and then subtract from that the times that are greater than the upper boundary.
You could also use the SUMPRODUCT function to get the desired result, in this manner:
=SUMPRODUCT(--(A1:A100>=8.5/24) * --(A1:A100<=9/24))
This approach only works if the values in the range A1:A100 contain only time values. If there are dates stored in the cells as well, then it may not work because of the way that Excel stores dates internally. If the range does include dates, then you need to modify the formula to take that into account:
=SUMPRODUCT(--(ROUND(MOD(A1:A100,1),10)>=8.5/24) * --(ROUND(MOD(A1:A100,1),10)<=9/24))
Finally, you could skip formulas altogether and use Excel's filtering capabilities. Apply a custom filter and you can specify that you only want times within the range you need. These are then displayed and you can easily count the results.
ExcelTips is your source for cost-effective Microsoft Excel training. This tip (12397) 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: Counting Times within a Range.
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