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 FileMaker Pro Custom Functions

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Military Time ( TimeField )

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  Average rating: 4.6  (30 votes)
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John Leyman, Loma Linda University

This function converts a Filemaker time field to military time.

Sample Input:
Military Time ( 4:40:36 PM )
Sample Output:

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


This function gives an HHMM display of a Filemaker time capture fields in the format of HH:MM:SS xM where x="A" or "P" (for the before or after 12 noon AM or PM).

This function converts to military (24-hour) time and also removes the colons and seconds display. This function could be changed slightly to include the display of seconds by searching for the second colon and taking the two digits to the immediate right of the second colon.

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


5 most recent comments | Show all 7 comments

I have this to convert a military entry in to a time field without manually entering the colon separators.

Time( Left( Self ;Choose( Length( Self );0;1;2;1;2));
Right( Self ;Choose( Length( Self );0;0;0;2;2));

This simple calc works great, except, I NEED the seconds included. The calc above drops the seconds to "00". Also, It won't allow an alteration of a "MM" or "HH" if incorrectly entered. The entire time must be re-entered. Can you help?

This is what I need:

Entry: "235120"
Result: "23:51:20

MAC 10.6.8

Steve Roethel, Mendon, NY
January 03, 2012 12:18pm

Disregard the previous post/comment, I found the calc I was looking for on one of your other pages.

Steve R

Steve Roethel, Mendon, NY
January 03, 2012 1:16pm

This doesn't work between 1200 noon and 1259. It outputs 2400 to 2459.

Ray C, Perth West Australia
February 05, 2013 11:15pm

It does not work for 12:00 AM to 12:59 AM or for 12:00 PM to 12:59 PM

Rocio, Houston, TX
November 12, 2014 7:22am

This is poorly written. I wouldn't use this at all. It should be wrapped in a GetAsTime, there is a much simpler way to do things other than Right & Left and as stated this doesn't work in 100% of the cases.


admin, internet
April 27, 2018 10:40am

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