Why convert PRT to IGES?
A Creo .prt is a proprietary binary format that no other CAD application reads natively. IGES is a neutral CAD interchange format accepted by older CAM systems, machine shops, and legacy CAD tools that do not read Creo's native format. If the receiving system supports both IGES and .stp, prefer STEP - it is the more capable successor with better fidelity and broader support in current software.
How to convert PRT to IGES
PTC Creo Parametric APP
Open the .prt in Creo, go to File > Save a Copy, select IGES (*.igs) from the Type dropdown, and click OK to write the IGES file.
CAD Assistant FREE
Open the .prt in CAD Assistant (opencascade.com), verify the geometry, then go to File > Export and select IGES as the output format.
Programs that convert PRT
About these formats
.PRT
PTC Creo / Pro-ENGINEER Part File
A PRT file is a single 3D part created by PTC Creo Parametric (formerly Pro/ENGINEER). To open it without buying Creo, use the free PTC Creo View or eDrawings viewer. To move the part to…
Open .PRT details →
.IGES
Initial Graphics Exchange Specification file
A .IGES file is associated with Initial Graphics Exchange Specification, a 3d image file.
Open .IGES details →Quality & what to watch
- Prefer STEP over IGES when the downstream tool supports both - STEP is the modern successor and carries more metadata with better support in current CAD and CAM software.
- IGES carries only the final solid B-rep geometry, not the Creo feature tree, sketches, or parametric dimensions.
- Creo saves numbered revisions (e.g.
bracket.prt.3); open the highest-numbered file to ensure you export the latest version.
Frequently asked questions
Should I use IGES or STEP?
Will the parametric feature history transfer to IGES?
Which Creo file is the latest version?
bracket.prt.3) is the latest.Can I convert without a Creo license?
.prt files and exports IGES without requiring a Creo license.
