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 FileMaker Pro Custom Functions

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  Average rating: 4.4  (30 votes)
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Returns 1 if y is a leapyear, 0 otherwise

Sample Input:
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


This is the fifth LeapYear custom function in this list...

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


I believe this is shorter Mod ( y ; 4 ) = 0

hisc, Brazil
November 03, 2016 4:11am

If a year is divisible by 100 then it is not a leap year ...

F.M.Expert, Seattle
November 03, 2016 5:26am

Leap years occur every 4 years. 25 times in 100 years. 2000 was a leap year. I have reason to believe every year divisible by 4 is leap.

Hisc, Brazil
November 03, 2016 7:46am

Oh, I was wrong. Wikipedia showed me that, although 2000 is leap, multiples of 100 are only leap at each 4 centuries. I was completely unaware.

Hisc, Brazil
November 03, 2016 7:49am

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