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 FileMaker Pro Custom Functions

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FormatTimestamp ( format ; tstamp )

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  Average rating: 4.4  (30 votes)
  Discuss this Custom Function

Tim Mansour, Neologica Print & Promotions

Formats a time/date any way you like using a format string

Sample Input:
FormatTimestamp ( "[Dayname] [D]-[MON]-[YY] [h].[mm][am]" , "" )
Sample Output:
Thursday 25-MAR-10 2.30pm

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


Formats a timestamp according to a format string, replacing date/time component placeholders with respective data. See the Substitute command in the function to determine (or change) the placeholders to use. Includes placeholders to allow upper/lower case for text components (eg, day names).
Use a null input timestamp ("") to format the current date/time.

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


hr12 = Mod ( h - 1; 12 ) + 1
should be
hr12 = Mod ( hr - 1; 12 ) + 1

["[am]"; If ( h < 12; "am"; "pm" )];
should be
["[am]"; If ( hr < 12; "am"; "pm" )];

simon Plint, Australia
March 24, 2010 5:54pm

I've updated the function to my latest version.

Tim Mansour, Sydney
March 24, 2010 8:32pm

Watch out for when keying in the formatting parameters. The case of the parameter often controls the case of the output e.g. "[month]" vs "[MONTH]".

Here's an exception: The parameter "[mm]" generates minutes while the parameter "[MM]" generates months.

Kevin Smith, London
June 03, 2015 11:40am

Make a comment about this Custom Function (please try to keep it brief & to the point). Anyone can post:

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