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 FileMaker Pro Custom Functions

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CF.DotwCwYearToDate ( DOTW ; CW ; Y )

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  Average rating: 4.2  (19 votes)
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Thomas Hellwig, Delasocial GmbH

Converts "Day of the week" and "Calendar week" and "Year" to a date.

Sample Input:
CF.DotwCwYearToDate ( 1 ; 1 ; 2016 )
CF.DotwCwYearToDate ( 7 ; 8 ; 2016 )
CF.DotwCwYearToDate ( 1 ; 0 ; 2016 )
CF.DotwCwYearToDate ( -1 ; -1 ; 2016 )
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


Converts "Day of the week" and "Calendar week" and "Year" to a date (german DIN 1355-1).

This CF works only with the date format used in germany, switzerland, austria and many other countries in europe, middle and south america, middle east, russia, australia, north afrika and some more states (Day.Month.Year). Monday is the first day of the week, sunday is the 7th day of the week.

Please note that the code was written in FileMaker version 12.

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


This will fail in a leap year.

comment, VR
July 12, 2016 1:26am

See the comments here:
for a correct calculation that is much simpler and will work with any date format in use.

comment, VR
July 12, 2016 1:32am

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