Brian Dunning's FileMaker Custom Functions

GestationalAgeEDD ( date )

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

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Rafael Burgos   Rafael Burgos

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  Sample input:
  Sample output:
36 week(s) 3 day(s)

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

This function complements the prior one. This will calculate the current length of a pregancy in weeks and days but using the due date (EDD) instead of using a last menstrual period. Assumes an average pregnancy length of 40 weeks (280 days). Again, this is potentially useful in healthcare solutions.



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

Under construction. Email me your wish list for improvements.