The only potential ofx to pfd conversion we know of, would be a transfer of data from .ofx files (Open Financial Exchange format) to a .pfd file used by Personal Finances software. When you import .ofx file to the program, you can save the data as .pfd files, thus in essence converting ofx to pfd.
Convert Open Financial Exchange format to Personal Finances database file.
We found one software available in the database for this conversion.
Microsoft Windows software - convert ofx to pfd on Windows
A finance management tool
Convert from ofx file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.