All of the Autodesk CAD programs nowadays support export to DWFX format (Design Web Format) and as such the natural choice for exporting .ipt files to .dwfx would be to use Autodesk Inventor where the .ipt files were made in the first place. Without Inventor it will be pretty hard to find a software capable of IPT to DWFX conversion.
Convert AutoDesk Inventor CAD part to Autodesk Design Web Format.
We found one software available in the database for this conversion.
Microsoft Windows software - convert ipt to dwfx on Windows
Autodesk Inventor is modeling application used to create 3D digital prototypes.
Convert from ipt 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.