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.

How this formula works

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

Excel Formula Training

Formulas are the key to getting things done in Excel. In this accelerated training, you'll learn how to use formulas to manipulate text, work with dates and times, lookup values with VLOOKUP and INDEX & MATCH, count and sum with criteria, dynamically rank values, and create dynamic ranges. You'll also learn how to troubleshoot, trace errors, and fix problems. Instant access. See details here.