Both the SLDPRT and PRT formats typically contain CAD data of some part of component, so it is likely one can be converted to each other, provided you find a software that supports both. Solidworks is probably your best choice here.
Convert SolidWorks CAD part to CAD 3D part or component.
We have found 2 software records in our database eligible for .sldprt to .prt file format conversion.
Microsoft Windows software - convert sldprt to prt on Windows
A popular is 2D and 3D CAD (computer-aided design) and CAE (computer-aided engineering) construction software for Microsoft Windows developed by SolidWorks Corporation.
SolidWorks is distributed in three distributions: Solidworks Premium, Solidworks Professional and SolidWorks Standard.
Convert from sldprt file
to prt file
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned sldprt to prt. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
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.