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 FileMaker Pro Custom Functions

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WorkingDays ( DateStart ; DateEnd ; HolidayList )

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  Average rating: 4.2  (35 votes)
  Discuss this Custom Function

Daniele Raybaudi, ACI

returns the number of working days between the two dates

Sample Input:
WorkingDays ( "7/7/2010" ; "7/7/2010" ; HolidayList )
WorkingDays ( "7/3/2010" ; "7/4/2010" ; HolidayList )
Sample Output:

 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed


returns the number of working days between the two dates.
( No weekend days nor any day of the HolidayList )

Note: these functions are not guaranteed or supported by Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it


5 most recent comments | Show all 20 comments

"HolidayList" can be:
a text, a text field, a calculation field with text result, a variable, whatever you wish to use but containing a list of dates.
Practically it is better to create an holidays table, each record representing an holiday, then a value list getting its values from that table.

Daniele Raybaudi, Rome
March 03, 2014 10:40am

I used this function and it worked perfectly! Thanks a bunch!

For those who it is not working for, be sure you are passing the HolidayList parameter as a list. I have this function called in a calculation field and it looks like:

WorkingDays( GetAsDate(Date Initial) ; GetAsDate(Date Final); List(Holidays::Date)

Bob Barker, ThePriceIsRight
October 06, 2016 8:39am

How is this a recursive function? Is it because it calls itself at the end with: WorkingDays ( DateStart + 1 ; DateEnd ; HolidayList )??

Bob Barker, ThePriceIsRight
October 06, 2016 8:50am

Hi all,

Not sure how to make the holiday list be 'seen' by the function...

Any ideas?


Dom Moir, London
October 09, 2016 3:03am

The function seems to have a delay as you scroll through records and it also seems to not work correctly each time (or is it my FileMaker?). In a field I will get a long string of numbers, but if I click in the field, it will suddenly change and display the number of days correctly.

Fred, CA
October 11, 2017 6:42pm

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