I suspect FileMaker can save its tables as .DBF; Access can use .DBF tables
directly or can import them. Alas, I don't think you can convert any part of
your application EXCEPT the tables. But, if you become familiar with Access,
or hire someone who is, it may be quite simple to re-create the user
interface features.
It actually is possible to convert the Layouts from FileMaker Pro into Visual Basic code which will re-create the layouts as Forms/Reports within Microsoft Access.
The layouts can be extracted as XML via the clipboard, and then the XML code can be parsed to create the VB code .bas files. This parsing and Visual Basic code generation process can be automated.
From my experience, it only takes approximately 1 second to re-generate each of the layouts as a new Form/Report within an Access database, by running the .bas files.
I have attached a couple of images to this post showing:
1) A sample of embedded layout graphics, along with text labels.
2) A converted Tab Panel with embedded objects.