If you work with 3D modeling or Computer-Aided Design (CAD) files, you may frequently come across STP (Standard for the Exchange of Product) files. These files contain 3D data and are used for exchanging CAD data between different software systems. If you need to view or analyze STP files, you'll need a suitable viewer. Fortunately, there are several free STP file viewer tools available that can help you open and inspect these files without any cost. Let's take a look at 7 of the best free STP file viewer tools you should try.

1. FreeCAD

FreeCAD is an open-source 3D CAD modeler that comes with a built-in STP file viewer. It's a powerful tool for creating and editing 3D models, and it supports a wide range of file formats, including STP.

2. eDrawings Viewer

eDrawings Viewer is a free software from Dassault Systèmes that allows you to view and collaborate on 2D and 3D CAD data. It supports not only STP files, but also a variety of other file formats commonly used in the industry.

3. Autodesk Viewer

Autodesk Viewer is an online tool that enables you to view 2D and 3D designs without the need for any software installation. You can upload and view STP files directly in your web browser.

4. 3D-Tool Free Viewer

3D-Tool Free Viewer is a standalone application for viewing, analyzing, and converting 3D CAD models. It supports various file formats, including STP, and provides powerful tools for measuring and inspecting 3D models.

5. SolidView/Lite

SolidView/Lite is a free STP file viewer that offers basic viewing and markup capabilities. It's suitable for users who need a simple and easy-to-use tool for opening and viewing STP files.

6. Glovius Lite

Glovius Lite is a free viewer for examining 3D models from popular CAD formats, including STP. It provides basic viewing and analysis tools, making it a handy solution for quickly reviewing STP files.

7. Onshape

Onshape is a cloud-based CAD platform that offers a free plan for hobbyists and makers. While it's primarily a CAD tool, it includes built-in capabilities for viewing and collaborating on 3D designs, including STP files.

These free STP file viewer tools offer a range of features and capabilities, making it easy for you to open, view, and analyze STP files without investing in expensive software. Whether you're a professional designer or a hobbyist looking to explore 3D models, these tools can help you get the job done without breaking the bank.