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 FileMaker Pro Custom Functions

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DateDif( date1 ; date 2 ; flag )

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  Average rating: 4.5  (34 votes)
  Discuss this Custom Function

Brett Buchmiller, No Company

Simulates Excel function of same name and provides for text labeling with correct grammer.

Sample Input:
DateDif( 11/2/2006 ; 7/6/2011 ; "Y" )

DateDif( 11/2/2006 ; 7/6/2011 ; "T" )

DateDif( 11/2/2006 ; 7/6/2011 ; "LIST" )
Sample Output:

4 years, 8 months and 4 days


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


Based on the excellent algorithm by Winfried Huslik but adapted for multiple uses based on flag. Works similar to DateDif() function in excel where flag determines if returns years, months or days between dates. Additional flags allow for text string with proper grammer or list of values to be accessed by LeftValues(), MiddleValues() or RightValues.

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



what if a date is empty ?

Daniele Raybaudi, Rome
August 08, 2011 2:24pm

What about:

d1 = Min ( date1 ; date2 ) ;
d2 = Max ( date1 ; date2 ) ;

Daniele Raybaudi, Rome
August 08, 2011 2:49pm

Using the dates 02/01/2015 and 11/30/2015 returns the wrong result.

November 03, 2014 11:09am

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