We have found 3 software records in our database eligible for .ipt to .sldprt file format conversion.
There seem to a exist a dedicated Inventor conversion tool in Solidworks that allows users to import .ipt files from Autodesk Inventor and save them as SolidWorks part file (.sldprt).
The only other alternative would be to use some dedicated 3rd party conversion program, such as CrossManager.
A popular is 2D and 3D CAD (computer-aided design) and CAE (computer-aided engineering) construction software for Microsoft Windows developed by SolidWorks Corporation.
A dedicated CAD converter with a large file format support that allows users to convert (translate) CAD designs or drawings between different formats. CrossManager is a commercial product, you will need to purchase a license. It is available in English, French, German, Italian, Czech, Chinese, Russian and Korean language.