Quick, clean, and to the point

Add workdays to date custom weekends

Excel formula: Add workdays to date custom weekends
Generic formula 
=WORKDAY.INTL(start_date,days,weekend, holidays)

To add or subtract workdays days to a date so that you can calculate a date in the future or past that skips weekends (customized) and holidays , you can use the WORKDAY.INTL function. Holidays and weekend are both optional.

In the example, the formula in D6 is:


This formula adds 7 workdays days to Tuesday, Dec 22. Three holidays are supplied and weekends are set using 11 for the weekend argument, which means "Sunday only". The result is Wednesday, December 30, 2015.


By default, the WORKDAY.INTL function will exclude weekends (Saturday and Sunday). In this case, however, we have supplied 11 for this argument, which means "Sunday only" (see: full list weekend codes).

We have also supplied a list of 3 holidays that all fall in the date range being calculated, which means that the holidays and Sundays will be excluded. The following table shows which dates are excluded with and without holidays provided (exluded dates are shaded gray). The final dates returned by WORKDAY are highlighted in yellow.

No holidays Holidays provided
Wed, 23-Dec-2015 Wed, 23-Dec-2015
Thu, 24-Dec-2015 Thu, 24-Dec-2015
Fri, 25-Dec-2015 Fri, 25-Dec-2015
Sat, 26-Dec-2015 Sat, 26-Dec-2015
Sun, 27-Dec-2015 Sun, 27-Dec-2015
Mon, 28-Dec-2015 Mon, 28-Dec-2015
Tue, 29-Dec-2015 Tue, 29-Dec-2015
Wed, 30-Dec-2015 Wed, 30-Dec-2015
Thu, 31-Dec-2015 Thu, 31-Dec-2015
Fri, 01-Jan-2016 Fri, 01-Jan-2016
Sat, 02-Jan-2016 Sat, 02-Jan-2016
Sun, 03-Jan-2016 Sun, 03-Jan-2016
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.