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 FileMaker Pro Custom Functions

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  Average rating: 4.2  (32 votes)
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Rafael Burgos, USAF

Calculate number of weeks and days from a given last menstrual period

Sample Input:
Sample Output:
1 week(s) 3 day(s)

 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


May be useful for developing solutions in healthcare. Uses last menstrual period ("date") to determine the # of weeks and days since last menstrual period and the current system date. It reports the interval in weeks and days. Easily modifiable to calculate using any date, not just Get(CurrentDate). Sorry if I did not follow the filemaker convention in formula notation.

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


Thanks a Lot for this Formula!
Works Great!

Rodolfo, Mexico City
June 03, 2015 9:45am

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