The “Step File Viewer” and Measuring on Windows

STP (STEP) files are 3D model files generated by CAD (Computer-Aided Design) software, used by engineers and designers in various fields.

To view these files, you need dedicated software that can handle the complexity and detail embedded in them.

This comprehensive guide will lead you through how to view an STP file in Windows, including Windows 10, online, and for free with measurement capabilities.

We’ll also delve into how to view them using Autodesk, Mac, open-source solutions, and SolidWorks.

Step File Viewer

Viewing STP Files on Windows and Windows 10

Windows does not natively support viewing STP files. However, many third-party applications can help you accomplish this task.


FreeCAD is a popular open-source tool that you can use to view and edit STP files. It’s available for Windows, including Windows 10, and is free to download.

  1. Download FreeCAD from the official website and install it.
  2. Open the application and navigate to ‘File’ > ‘Open’.
  3. Locate your STP file and open it. You’ll now be able to view and manipulate the 3D model.

Viewing STP Files Online for Free with Measurements

Various online platforms allow you to view STP files for free, with the added benefit of measurement tools.


ShareCAD is an online viewer that supports STP files. It allows you to measure the components of your 3D models.

  1. Navigate to the ShareCAD website.
  2. Click on ‘Open’ and upload your STP file.
  3. Once uploaded, use the measurement tools provided to analyze your model.

Viewing STP Files on Autodesk

Autodesk offers several software solutions that can open and interpret STP files, with AutoCAD and Fusion 360 being popular choices.


  1. Open AutoCAD.
  2. Click ‘File’ > ‘Open’.
  3. Choose your STP file and click ‘Open’.

Fusion 360

  1. Open Fusion 360.
  2. Select ‘File’ > ‘Open’.
  3. Choose your STP file and click ‘Open’.

Viewing STP Files on Mac

On Mac, FreeCAD can also be used to view STP files. The process is identical to that outlined in the Windows section above.

Viewing STP Files Using Open-Source Solutions

Open-source tools offer the advantage of being free and often customizable. FreeCAD, as mentioned before, is a prime example. Simply download it from the official website, open the application, and choose your STP file.

Viewing STP Files in SolidWorks

SolidWorks, a leading CAD software, can also open STP files.

  1. Open SolidWorks.
  2. Select ‘File’ > ‘Open’.
  3. Choose ‘STEP AP203/214’ in the file type dropdown.
  4. Select your STP file and click ‘Open’.

In conclusion

Viewing STP files is a breeze when you have the right tools. Whether you’re using Windows, Mac, Autodesk, open-source software, or SolidWorks, you can easily access, view, and measure your 3D models.

Plus, online platforms like ShareCAD make it possible to view these files from anywhere, for free.

By exploring these options, you’ll find the solution that fits your needs, enhancing your workflow and productivity.