Open DWG.STP File: Step-by-Step Guide

Open DWG.STP File as part of your work process. You are here because you have a file that has a file extension ending in .stp. Certain applications can only launch files with the file extension .dwg. .stp files may be data files rather than documents or media, which means you can not view them whatsoever.

open stp file

Suggested readings in Open DWG File:

What is a .STP File? 

A STEP 3D CAD file is generally classification of 3D image files, and these STEP 3D CAD files are integrated with encoding specifications used for the STP file format. The text formatting standards implementation of these STEP 3D CAD files are also compliant to STEP Application Protocols ISO 10303-2xx.

These STEP 3D CAD files are known explicitly as 3D assembly data comprising of digital 3D elements used for mechanical CAD designs. These are then saved in the STP file format, which is appended with the .stp extension. These files, also considered as 3D products model data, exchange files by mechanical CAD applications implemented with support for these STP files.

The Inventor Fusion CAD software development by Autodesk and the performance is with the backing for these STP files. Meaning that the computers running on Microsoft Windows-based systems can be used for installing the Inventor Fusion CAD programs to implement support into the methods for creating, opening, and viewing the contents of the STP files.

How to Open a .STP File 

 You need to launch a .stp file, or any other file on your PC, by double-clicking it. If your file association is set up correctly, the application that is to open your .stp file will open it. You might need to download or purchase the correct application. It’s also possible that you have the proper application on your PC, but .stp files are not yet associated with it. In this regard, when you try to open a .stp file, you can tell Windows which application is the correct one for that file. From then on, opening a .stp file will open the right application.

Applications that open a .STP File

Free CAD

Dassault Systemes CATIA

A word of warning: Be careful not to rename the file extension on .stp files or any other files. It will not change the file type. Only a special conversion software can change a file from one file type to another.

What if a file extension? The file extension is a set of three or four characters at the end of a filename like .stp. The file extensions tell you what type of file it is, and also show Windows what programs it can open. Windows, most of the time, associates a default program to each file extension. This way, when you double-click the file, the program will launch automatically. When the program is no longer on your computer, you can sometimes get an error when you try to open the associated file.


The main goal is to help you understand better what a file with a *.stp suffix is and how to open it. All file types, file format descriptions, and software programs listed on this page have been individually thoroughly researched and verified by the File Info team. Please leave us your recommendation and reviews on the comment box down below.

Leave a Comment