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 FileMaker Pro Custom Functions

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  Average rating: 4.0  (35 votes)
  Discuss this Custom Function

Rolf Clausen, Mallverkstan

Converts an old ISBN number to the new ISBN13 format.

Sample Input:
ISBN13 ( "91-44-04236-1" )
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


Converts an old ISBN number to the new ISBN13 format.

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


Useful thank you, but now amazon have changed their rules again, and I can no longer NOT provide an ISBN10, but must provide a 13, along with a 10.

Nuisance for books published recently.

Can you do a conversion script for ISBN13 to 10 ?

david, Melbourne
June 13, 2015 7:09pm

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Answer 4 + 9 =
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