Are you working with 3D models and need a free online STEP file viewer to visualize and analyze your designs? Look no further! We've rounded up 5 of the best free online STEP file viewers for you to try today. Whether you're a CAD designer, engineer, or hobbyist, these tools will help you view, measure, and annotate your STEP files with ease. Let's take a closer look at each of them: 1. eMachineShop eMachineShop offers a free STEP file viewer that allows you to open and view your 3D models without any installation. Simply upload your STEP file and start exploring your design in 3D. You can also take measurements and analyze geometric dimensions with this easy-to-use tool. 2. A360 Viewer A360 Viewer by Autodesk is a powerful online 3D model viewer that supports various file formats, including STEP. With A360 Viewer, you can view and share your 3D models on any device with a web browser. It also provides tools for measuring, sectioning, and markup, making it a versatile option for professionals and hobbyists alike. 3. FreeCAD FreeCAD is an open-source parametric 3D CAD modeler that comes with a built-in STEP file viewer. This full-fledged CAD software allows you to not only view but also modify your 3D models using a wide range of tools and features. It's a great choice for those who need more than just a viewer for their STEP files. 4. 3D-Tool 3D-Tool is a free viewer for 3D CAD models, including STEP files. It offers powerful visualization and analysis tools that enable you to inspect and annotate your designs with ease. With its user-friendly interface and cross-platform compatibility, 3D-Tool is a popular choice for engineers and designers. 5. online CAD viewer online CAD viewer is a simple and intuitive tool for viewing and sharing 3D CAD models, including STEP files. It supports a wide range of file formats and provides basic measurement and annotation capabilities. Whether you're collaborating with colleagues or presenting your designs to clients, online CAD viewer has got you covered. There you have it - 5 free online STEP file viewers that you can start using today. Whether you need a basic viewer for quick inspections or a feature-rich tool for in-depth analysis, these options have something for everyone. Try them out and discover the perfect tool for viewing and interacting with your 3D models.