Download FreeCAD – Free and Open-Source Parametric 3D CAD Modeler

FreeCAD is a powerful, free, and open-source parametric 3D CAD (Computer-Aided Design) application aimed at mechanical engineering, product design, and architecture. It allows users to model complex 3D objects using a history-based parametric approach, where dimensions and constraints can be changed at any time and the model updates automatically.

FreeCAD is built around a modular workbench system, offering specialized tools for part design, sketching, FEM (finite element analysis), path generation for CNC machining, architectural design, robot simulation, and more. It supports a wide range of file formats including STEP, IGES, STL, OBJ, DXF, and SVG, making it compatible with most professional CAD workflows.

Cross-platform and fully extensible via Python scripting, FreeCAD is suitable for hobbyists, students, and professionals who need a capable parametric CAD tool without expensive commercial licenses. Its active community contributes a growing library of addons and workbenches to expand functionality.

Key Features

• Parametric modeling – Every dimension and constraint is editable; the model history updates automatically when parameters change.
• Multi-workbench system – Dedicated workbenches for Part Design, Sketcher, FEM, Path (CNC), Arch, Draft, and more.
• Wide file format support – Import and export STEP, IGES, STL, OBJ, DXF, SVG, IFC, and other formats.
• FEM simulation – Built-in finite element analysis for structural stress and thermal simulations.
• CNC path generation – Path workbench creates G-code toolpaths for CNC milling and routing.
• Python scripting – Full Python API for automation, macro recording, and custom workbench development.
• Cross-platform – Available on Windows, macOS, and Linux.

How to Install

1. Download the FreeCAD installer for your operating system from the link below.
2. Run the installer and follow the on-screen instructions to complete setup.
3. Launch FreeCAD and select a workbench from the workbench dropdown (e.g., Part Design for solid modeling).
4. Create a new document and start a sketch on a base plane to begin your first 3D model.
5. Install additional addons via Tools > Addon Manager to expand FreeCAD with community workbenches and macros.