FreeCAD is a free, open-source 3D CAD program used for engineering and product design. It lets you build precise 3D models, sketches, assemblies, and technical drawings. It also comes with tools for FEM (strength and stress testing), CAM (machine tool programs), BIM (building design), and Python-based scripting. FreeCAD runs on Windows, macOS, and Linux, which sets it apart from most paid CAD tools that only work on one operating system.
The current stable release is FreeCAD 1.1.3. You can download it for 64-bit Windows, macOS, and Linux from the official FreeCAD website.
What Is FreeCAD?
FreeCAD is a parametric 3D CAD program built for engineering, product design, architecture, manufacturing, and other technical work.
“Parametric” means you build a model step by step, using sketches, rules (called constraints), and features you can go back and change at any time. FreeCAD uses a geometry engine called Open CASCADE Technology to build its solid 3D shapes.
Unlike most CAD software, FreeCAD is open source rather than a normal paid product. Its code is released under the LGPL-2.0-or-later license, but any file you make with FreeCAD belongs fully to you.
For engineers comparing CAD tools, FreeCAD’s biggest strength is this combination: full parametric CAD, open-source code, support for many operating systems, and no subscription fee.
Is FreeCAD Really Free?
Yes. FreeCAD is free and open source.
There’s no paid “Standard,” “Professional,” or “Premium” version of FreeCAD. You can download, use, and share it at no cost, for personal, school, or business use.
This is different from many CAD programs that only offer a short free trial or a limited personal-use version.
FreeCAD also has no subscription. You won’t be asked to pay again after a set time just to keep using it.
What Is FreeCAD Used For?
3D Part Design
FreeCAD gives you parametric tools to design exact mechanical parts and other solid shapes. The Part Design and Sketcher tools let you build models step by step, using sketches, rules, and an editable design history.
Assembly Design
FreeCAD has a built-in Assembly tool, added as an official part of FreeCAD starting with version 1.0.
It lets you combine parts, set assembly rules, create exploded views, build a parts list (bill of materials), and test how an assembly moves. You can also add extra community-made assembly tools.
This matters because older guides about FreeCAD often only mention assemblies through outside add-ons, not this newer built-in tool.
Technical Drawings
FreeCAD includes a tool called TechDraw for turning 3D models into technical drawings. It creates drawing views and other documents used to share your design with others.
FEM and Engineering Analysis
FreeCAD has an FEM tool for finite-element analysis — a way to test how a part handles stress, heat, or force before you build it.
This makes FreeCAD useful if you want CAD design and basic engineering testing in one free program. Still, having FEM tools doesn’t mean FreeCAD fully replaces a dedicated, paid engineering-analysis program.
CAM and CNC
FreeCAD has a CAM tool for computer-aided manufacturing and CNC work. It can plan machining steps and generate the code your machine needs to cut a part.
This tool used to be called the “Path Workbench.” That name is outdated — it’s simply called CAM now.
BIM and Building Design
FreeCAD has a built-in BIM tool for building and construction projects. This BIM tool came from combining the older “Arch” tool with outside BIM add-ons, starting in FreeCAD 1.0.
3D Printing
You can use FreeCAD to design parts and export files ready for 3D printing. It supports common 3D-printing formats, including STL and 3MF.
Robot Simulation
FreeCAD has a Robot tool for simulating a standard six-axis industrial robot. You can build movement paths and export robot programs with it.
However, FreeCAD’s own documentation lists the Robot tool as unmaintained. Don’t treat it as an active, up-to-date robotics platform.
Key FreeCAD Features
| Feature | What It Does |
|---|---|
| Parametric 3D CAD | Builds solid models you can edit later |
| Sketcher | Creates 2D sketches with rules (constraints) |
| Part Design | Builds parts using features and history |
| Assembly | Builds and solves mechanical assemblies |
| TechDraw | Creates technical drawings |
| FEM | Runs finite-element (stress and strength) tests |
| CAM | Supports CNC and machining work |
| BIM | Supports building and construction design |
| 3D Printing | Creates and exports printable models |
| Python | Automates and extends FreeCAD |
| Add-ons | Adds extra workbenches, macros, and tools |
| File Format Support | Imports and exports many CAD file types |
FreeCAD’s workbench system — splitting tools into task-based groups — is one of its best features. You can add even more tools through the built-in Addon Manager.
FreeCAD Workbenches
FreeCAD organizes most of its tools into workbenches, so you can switch between different engineering tasks easily.
Key workbenches right now include:
- Part Design
- Part
- Sketcher
- Assembly
- TechDraw
- FEM
- CAM
- BIM
- Draft
- Robot
- Spreadsheet
Not every workbench gets the same level of updates. Assembly, for example, is now a full official workbench, while Robot is documented as unmaintained.
You can also add community-built workbenches and macros through the Addon Manager.
FreeCAD File Formats
FreeCAD uses FCStd as its own file format, but it can import and export many others, including:
- STEP
- IGES
- STL
- OBJ
- DXF
- SVG
- IFC
- 3MF
- AMF
- OpenSCAD CSG
- VRML
- NASTRAN
- and more
Importing a file in another format doesn’t always keep the same editable design history it had in its original program. For example, a shape you import as a solid isn’t the same as a model built natively in FreeCAD, feature by feature.
Some formats, including certain DWG and Collada files, may need extra components to work fully.
FreeCAD Download
The official FreeCAD download page lists 1.1.3 as the current stable release. All downloads are for 64-bit systems.
| Platform | Current Support |
|---|---|
| Windows | 64-bit Windows 10 or newer |
| macOS | macOS 12 Monterey or newer |
| Linux | 64-bit x86_64 and ARM64 builds |
For normal engineering work, always use the stable release rather than a development build. FreeCAD’s download page states that its weekly development builds are for testing only and aren’t meant for real projects.
For safety, download FreeCAD only from its official website, not from a third-party download site.
FreeCAD System Requirements
FreeCAD can run on fairly modest computers, though performance depends on your model’s complexity, your assemblies, your graphics card, and which workbenches you’re using.
The official download page lists Windows 10 as the lowest supported Windows version, and macOS 12 Monterey as the lowest supported Mac version.
FreeCAD also needs a working OpenGL setup to display 3D content. FreeCAD’s own FAQ notes that OpenGL driver issues can cause display problems or crashes.
FreeCAD’s geometry engine, OpenCASCADE, only partly supports multi-threading. This means adding more CPU cores alone won’t always make FreeCAD run faster.
FreeCAD for Commercial Use
Yes, FreeCAD can be used for paid, commercial engineering work.
FreeCAD’s license allows personal, business, and organizational use, and you can install it on as many computers as you need.
That said, the LGPL license terms still apply if you distribute FreeCAD, modify its code, or build FreeCAD components into your own product. Commercial use doesn’t remove these license rules.
Files you create in FreeCAD are not covered by the LGPL license. FreeCAD’s own documentation confirms you fully own the files you make.
FreeCAD for Students
FreeCAD doesn’t have a separate paid student edition. Students use the exact same free, open-source FreeCAD as everyone else.
For a broader look at engineering software options for students, see our Best Free Engineering Software for Students guide.
FreeCAD vs SOLIDWORKS
FreeCAD and SOLIDWORKS both offer parametric 3D CAD, but they work in very different ways.
FreeCAD is free, open source, and works on many operating systems.
SOLIDWORKS is a paid CAD product with a much bigger, closed system of tools and services built around it.
FreeCAD also runs on Linux and macOS, while current SOLIDWORKS Design mainly targets Windows.
The bigger differences show up in company support, paid data-management tools, how well different programs connect together, and how developed certain specialized commercial tools are.
For a full side-by-side breakdown, see our FreeCAD vs SOLIDWORKS comparison.
FreeCAD vs Other CAD Software
FreeCAD stands out because it’s free without a trial period or a “personal use only” license attached.
It combines core parametric CAD with extra workbenches for assemblies, FEM, CAM, BIM, and more.
The trade-off is FreeCAD’s open-source, modular structure. You may need to work across different workbenches, community add-ons, and community-based support, rather than one single, tightly-built commercial system.
FreeCAD Limitations
FreeCAD being free doesn’t mean every workflow is served equally well.
More Modular Workflows The workbench system gives you a wide range of tools, but switching between them can feel less smooth than working inside one unified commercial CAD suite.
Community-Based Development FreeCAD is built by an open-source community, so its update pace and support model work differently than a single-vendor commercial product.
Advanced Engineering Workflows FreeCAD’s FEM, CAM, BIM, and other tools are genuinely useful, but shouldn’t automatically be treated as full replacements for specialized commercial software in advanced or highly specific workflows.
Add-Ons and Workbenches The Addon Manager gives you access to many extra tools. That’s useful, but it also means you may need to evaluate and maintain those add-ons yourself.
Robot Workbench The Robot workbench still exists, but FreeCAD’s documentation lists it as unmaintained. If you need an active, current robotics platform, look at dedicated robotics software instead.
Large or Complex Models Performance depends heavily on your specific model and workload, partly due to FreeCAD’s only-partial multi-threading support, mentioned above.
Who Should Use FreeCAD?
FreeCAD is a strong fit for:
- Students and learners who want full CAD tools without a subscription
- Hobbyists and makers who need parametric 3D modeling at no cost
- Engineers and designers who prefer open-source software
- Linux and macOS users who need a true native desktop CAD tool
- Developers who want Python scripting and custom tools
- Organizations checking out open-source CAD for business use
FreeCAD’s feature set spans mechanical design, technical drawings, manufacturing, BIM, FEM, and other technical work.
Who Should Not Choose FreeCAD?
FreeCAD may not be the best fit if your workflow depends heavily on:
- One single, tightly-built commercial CAD environment
- Official vendor support from a dedicated support team
- Large enterprise CAD/PDM systems
- Highly specialized simulation or manufacturing software
- A standardized workflow with little reliance on community add-ons
These are workflow considerations, not hard limits — FreeCAD can still be used for serious, professional engineering work.
Pros and Cons
| Pros | Cons |
|---|---|
| Free and open source | Workflow can feel less unified |
| Commercial use allowed | Some tasks need extra workbenches |
| Works on Windows, macOS, and Linux | Support comes from the community |
| Full parametric 3D CAD | Performance depends on model size |
| Assembly, FEM, CAM, and BIM tools | Not every workbench gets equal updates |
| Python scripting and customization | Smaller network of extra tools than paid CAD |
Is FreeCAD Good Enough for Professional Work?
Yes, FreeCAD can be used for professional engineering work, especially if you want full parametric CAD without paying a yearly license fee and are comfortable with open-source, cross-platform software.
Its current toolset covers parametric modeling, assemblies, technical drawings, FEM, CAM, BIM, and Python-based scripting.
The real question isn’t just whether it’s free — it’s whether FreeCAD offers the specific workflows, file support, data tools, and specialized features your work actually needs.
For mechanical design, prototyping, education, open-source projects, and many independent engineering jobs, FreeCAD offers a strong, well-rounded toolset. If your organization depends on a specific commercial CAD ecosystem or needs official vendor support, weigh FreeCAD against those exact requirements first.
Frequently Asked Questions
Is FreeCAD really free?
Yes. FreeCAD is completely free and open source, and you can use it for personal, school, or commercial work at no cost.
Can FreeCAD be used commercially?
Yes. FreeCAD’s license clearly allows commercial use, as long as you follow its LGPL terms.
Is FreeCAD better than SOLIDWORKS?
They’re built on very different models — FreeCAD is free and open source, while SOLIDWORKS is a paid, closed CAD system. The better choice depends on your budget, your team’s needs, and the specific support and features you require.
Can FreeCAD run on Linux?
Yes. FreeCAD offers official builds for both Linux x86_64 and ARM64 (aarch64) systems.
Does FreeCAD work on Mac?
Yes. Current builds support macOS 12 Monterey and newer.
Does FreeCAD have FEM tools?
Yes, through its FEM workbench, used for finite-element stress and strength analysis.
Does FreeCAD have CAM tools?
Yes, through its CAM workbench, built for CNC programming and machining work.
Does FreeCAD have an Assembly workbench?
Yes, it has been a full, built-in part of FreeCAD since version 1.0.
Can I use FreeCAD for 3D printing?
Yes. You can design and export 3D-printable parts, with support for formats like STL and 3MF.
Does FreeCAD support Python?
Yes, extensively. Python powers FreeCAD’s macros, custom tools, and add-on workbenches.
What is the newest FreeCAD version?
The current stable release is FreeCAD 1.1.3.
Is the Robot workbench still maintained?
No. FreeCAD’s own documentation lists the Robot workbench as unmaintained.
Conclusion
FreeCAD is a free, open-source, parametric 3D CAD program with a wide set of engineering tools. It covers part design, sketches, assemblies, technical drawings, FEM, CAM, BIM, file conversion, and Python scripting.
The current stable release is FreeCAD 1.1.3, with official 64-bit downloads for Windows, macOS, and Linux. Its latest update mainly patches security issues tied to opening project files, so it’s worth staying on the newest version, especially if you open files shared by other people.
FreeCAD’s biggest strength isn’t simply that it’s free. It combines open-source code, full commercial-use rights, support for many operating systems, real parametric CAD, and an expandable workbench system, all in one program.
Its main trade-off is that a community-built, modular CAD tool doesn’t offer quite the same ecosystem, vendor support, or workflow polish as a large commercial CAD suite.
If you’re deciding whether FreeCAD is right for you, the real question isn’t just “is it free?” — it’s whether its tools and open-source model match the kind of engineering work you actually do.
For more help choosing the right engineering software overall, see our Engineering Software: Categories, Pricing & How to Choose guide.