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.

Since each date is really just a number stored in Excel, to compute the midpoint of two dates you would use the same mathematical formulas you would use to calculate the midpoint of two numbers ...

If you need to count or calculate number of Leap Years between two dates in Excel or list of two dates in Excel, make use of this formula to get things done.

A TechRepublic member wrote for advice on calculating the years, months, and days elapsed between two dates. This tutorial explains the solution provided by TechRepublic contributor Jeff Davis.

Excel offers several easy ways to calculate expiry dates. This post explores different ways to automate expiry date calculations in Excel.