Quick, clean, and to the point

Get project midpoint

Excel formula: Get project midpoint
Generic formula 

To calculate an approximate project midpoint date, you can use the WORKDAY function. In the example shown, the formula in E5 is:


where "holidays" is the named range G5:G10.


The WORKDAY function returns a date in the future or past, based on a start date, workdays, and optional holidays. WORKDAY automatically excludes weekends, and counts only Monday through Friday as workdays.

In the example shown, WORKDAY is configured to get a project midpoint date by adding half of the days value to the start date:


Project A is 5 workdays, so E5/2 = 2.5 days. The WORKDAY function ignores fractional values and uses only the integer portion of days, so it uses the value 2 to return a date of May 8.

Note the WORKDAY function does not count the start date as a workday.

Custom schedule

The WORKDAY function always treats Saturday and Sunday as non-working days. To get a midpoint for a project where working days are not Monday-Friday, substitute the WORKDAY.INTL function for WORKDAY. For example, to calculate a midpoint in a project where workdays are Monday-Saturday you can use a formula like this:


There are many other ways to configure WORKDAY.INTL. This page provides details.

Dave Bruns

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