.PRT File Extension

A PRT file is a part created by PTC Creo Parametric, which is part of the Creo CAD suite. It contains information used to record the part's structure and show it as a 3D model. Creo users often combine PRT files into Creo assembly (.ASM) files.

Creo Parametric is a CAD program that engineers use to design manufactured parts and assemblies. Engineers can also use Creo to analyze the designs they've created (e.g. test tolerances) and export the designs in formats used by Computer Numerical Control (CNC) machines.

Parts created in Creo Parametric are saved as PRT files. While Creo is the primary application that uses PRT files, some other CAD applications can open them.

NOTE: Creo Parametric was formerly known as Pro/Engineer and Wildfire.

You can open a PRT file in PTC Creo (Windows) or Autodesk Fusion 360 (multiplatform). Note that you can open PRT files in only the Commerical version of Fusion 360; the Personal version does not support PRT files.

You can use the Commercial version of Autodesk Fusion 360 to convert PRT files to the following formats (and some others):

• .F3D - Fusion 360 Archive
• .3MF - 3D Manufacturing File
• .IPT - Autodesk Inventor Part
• .FBX - Autodesk FBX Interchange File
• .OBJ - Wavefront 3D Object
• .SKP - SketchUp Document
• .STP - STEP 3D CAD File
• .STL - Stereolithography File
• .USDZ - Universal Scene Description Zipped

Presentation template created by Corel Presentations, an application included with Corel WordPerfect Office; saves a slide style and layout that can be used for creating new .SHW presentations.

CAD file created by CADKEY, a program used for designing 2D and 3D parts; contains both the model and drawing layouts; includes model geometry in wireframe, surface, and solids (ACIS based), plus dimensioning, annotation, vector, plane and other entity types in one modeling space.

The Drawing Layout Mode in CADKEY contains defined views of model geometry for associative dimensioning and annotation, as well as section views. It also allows 2D wireframe geometry creation.

NOTE: KeyCreator, the successor to CADKEY, uses .CKD files to store designs.

A PRT file may also be a model part file saved in a three-dimensional model format used by Unigraphics, a 3D CAD program. It contains surface and solid information for a single part. PRT files are saved in a binary format, similar to an Alias wire model and an SDRC (Structural Dynamics Research Corporation) model.

NOTE: Unigraphics was acquired by Siemens and is now distributed as Siemens NX.

A PRT file contains portal information used by the Valve Visible Information Set (VVIS) command-line tool included with Hammer Editor, which is a program used to build maps for Valve games such as Half-Life. It stores a list of portals in ASCII format that are used by VVIS to perform visibility calculations to determine which objects on a map can be seen by a player and must be rendered.

3D model created with Solid Edge, a CAD program used primarily for creating industrial parts and assemblies; can be combined with other 3D parts in an assembly (.ASM) file.

Contains configuration information that allows the computer to communicate with the printer; may be used by certain software programs, such as Dr. Halo software, which saves images in a device-independent format.

Output from a printing job sent to the printer and saved as a file; contains formatting information that tells the printer how the document should be printed.

PRT files may be created on Unix systems using the FILEUTIL function with a Filename parameter. They can also be opened by FILEUTIL and printed using the LP (line printer) parameter.

Protected text document created by Crypt Edit, a free program used for word processing; stores an encrypted and password protected document; may contain text, images, and page formatting information; used to securely store documents.

NOTE: PolySoft Solutions discontinued development for Crypt Edit in 2000.