How to open STEP files
Did your computer fail to open a STEP file? We explain what STEP files are and recommend software that we know can open or convert your files.
What is a STEP file?
Files with the .step extension are usually 3D model files created in the STEP file format. STEP stands for Standard for the Exchange of Product Data. This ISO standard exchange format is used to distribute 3D data files (such as CAD files) in a format that can be viewed by a variety of software applications. The .step file extension is interchangeable with the .stp file extension.
The .step file extension is also used for PyDDR files.
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Software that will open, convert or fix STEP files
These apps are known to open certain types of STEP files. Since many different programs may use STEP files for different purposes, you may need to try a few of the apps to open your specific STEP file.
 | Mastercam | User submitted |
 | CadFaster-QuickStep | User submitted |
 | STP Viewer | User submitted |
 | ABViewer | User submitted |
 | 3D-Tool | User submitted |
 | eDrawings RapidFire Lite Application | User submitted |
 | VariCAD Application | User submitted |
 | Rhinoceros | User submitted |
 | Solid Edge | User submitted |
 | Autodesk Inventor | User submitted |