We show you how to use Excel to count days between two dates using the DAYS, DATEDIF, NETWORKDAYS, and TODAY functions, and Subtraction.

How to calculate average GPA in Excel? You need to use this formula to calculate the average GPA in Excel: =<cell with sum of grade values>/<total number of subjects>.

One of the many features of Excel is being nosy. That's right, you can quickly calculate a persons age as long as you have their birth date.