Free CAD
Open-source parametric 3D modeler for engineering and product design.
Open the official app on www.freecad.org
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Use it free
Open the official tool or demo — no account needed.
Self-host it
Run the open-source version on your own infrastructure.
What is Free CAD?
FreeCAD is an open-source 3D parametric modeler licensed under LGPL-2.1, designed for creating complex technical designs with precise geometric constraints. It enables users to build 3D models that can be modified by adjusting parameters, making it ideal for engineering, architecture, and product design. The tool is used by professionals, hobbyists, and educators who need a free alternative to commercial CAD software. FreeCAD solves the problem of high costs associated with proprietary 3D modeling tools while offering features for technical modeling. Its multiplatform nature and active community ensure continuous development and support, though it requires technical expertise for advanced workflows.
How it works
FreeCAD is a free and open-source 3D parametric modeler that allows users to create, edit, and analyze complex geometries. Its primary purpose is to provide a flexible, extensible platform for technical design tasks, such as mechanical engineering, architectural modeling, and industrial product development. The tool is developed by a global community and hosted on GitHub, with its official repository tracking over 48,000 commits. It is licensed under LGPL-2.1, enabling users to modify and distribute the software while maintaining compatibility with proprietary applications. FreeCAD supports parametric modeling, allowing users to define objects with constraints that can be adjusted later. It includes workbenches for tasks like 3D printing, CNC machining, and finite element analysis. The software also integrates with external tools like Python scripts and CAD file formats such as STEP and IGES.
How to use it
- 1Download FreeCAD from its official GitHub repository or trusted mirrors. 2. Install the software on your operating system (Windows, macOS, Linux). 3. Launch the application and create a new document. 4. Use workbenches like 'Part Design' to sketch 2D profiles and extrude them into 3D objects. 5. Apply constraints to ensure geometric relationships remain intact during edits. Practical tips: Use the 'Draft' workbench for 2D sketching, and the 'Mesh' workbench for importing 3D scans. Familiarize yourself with the 'Help' menu for tutorials and documentation.
What it can do
- parametric CAD
Use cases
Assumptions and limitations
Assumptions
- source: https://github.com/FreeCAD/FreeCAD
- license: LGPL-2.1 — free to use
- privacy: Self-hosted — you control your data
Limitations
- Steep learning curve for beginners unfamiliar with CAD workflows
- Limited native support for advanced 3D printing formats like STL
- Rendering capabilities are basic compared to dedicated 3D modeling tools
- Community-driven development may result in inconsistent feature prioritization
- Plugin ecosystem is less mature than commercial alternatives
Understanding the result
Open-source parametric 3D modeler for engineering and product design.
Tool details
- Clearly flagged when a network request is needed.
- No account, no sign-up, and no tracking of your content.
- Powered by (MIT).
- Built with
- (FreeCAD/FreeCAD)
- License
- MIT
- Runs locally
- No — requires a network request
- Verification
- Not yet verified
- Input
- Query
- Output
- Text
Built with FreeCAD/FreeCAD. OpenToolVault provides the discovery and browser interface while crediting the original project maintainers.
- Built with
- License
- MIT
Open-source project
OpenToolVault is an independent directory. We are not affiliated with or endorsed by this project.
References
- / — GitHub Repository
Upstream project · GitHub
- LGPL-2.1 License
Upstream project
Frequently asked
What is FreeCAD used for?
FreeCAD is primarily used for technical 3D modeling in fields like mechanical engineering, architecture, and product design. It enables users to create parametric models that can be modified by adjusting parameters, making it suitable for tasks such as designing custom parts, architectural blueprints, and 3D-printable objects. Its open-source nature makes it accessible for both professionals and educators.
How does FreeCAD's parametric modeling work?
FreeCAD uses a parametric approach where objects are defined by geometric constraints and relationships. When a user modifies a parameter, the software automatically updates the entire model while maintaining the defined constraints. This differs from non-parametric tools, which require manual rework when changes are made. The system relies on a modular architecture, allowing users to switch between workbenches for different tasks like sketching, meshing, or finite element analysis.
How do I create a simple 3D object?
To create a basic 3D object: 1. Open FreeCAD and select the 'Part Design' workbench. 2. Click 'Create new object' and choose 'Pad' to extrude a 2D sketch. 3. Use the 'Draft' workbench to draw a rectangle, then apply constraints to define its dimensions. 4. Select the sketch and use the 'Pad' tool to extrude it into a 3D shape. 5. Adjust parameters in the property view to modify the object's dimensions.
How does FreeCAD compare to Fusion 360 or Blender?
FreeCAD is focused on parametric CAD for engineering and technical design, while Fusion 360 offers integrated CAD/CAM/CAE tools with cloud-based collaboration. Blender is a general-purpose 3D modeling tool with limited parametric capabilities. FreeCAD's strength lies in its extensibility and open-source ecosystem, whereas Fusion 360 provides a more polished, commercial experience. Blender excels in artistic modeling but lacks FreeCAD's precision for technical applications.
How do I fix a missing module or plugin?
If a module is missing, first check the 'Addons' workbench in FreeCAD. If the module is not installed, download the latest version from the official GitHub repository. Extract the files and place them in the 'Mod' directory within FreeCAD's installation folder. Restart the application to load the new module. For persistent issues, consult the FreeCAD forums or check the GitHub issue tracker for compatibility updates.