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How to count number of half hour intervals in Excel?

If you have two time columns in a worksheet as shown as below screenshot, and you want to count the number of half hour intervals in every period, you can read this tutorial. This tutorial will tell you how to quickly count the number of half hour intervals between start time and end time in Excel.


Count number of half hour intervals

arrow blue right bubble Count number of half hour intervals

There is a formula that can help you quickly count the number of half intervals between the start time and end time.

Select a blank cell next to the range, and type this formula =FLOOR((B2-A2)*24,0.5)*2 ( B2 indicates the end time, and A2 is the start time cell) into it, then press Enter key and drag the Autofill handle to fill the formula to the range you need.


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