Best Free CAD Software

“Free” CAD can mean open-source software you may use commercially, a private cloud tool limited to hobbies, or a browser app that publishes your work. Those aren’t interchangeable bargains. For most people who need precise, editable 3D parts, FreeCAD is the best place to start: it runs locally, exports useful solid formats, and doesn’t turn commercial use into an upgrade trigger. Its catch is a steep, sometimes uneven interface. If you need only 2D drawings, an easy first model, browser collaboration, or repeatable geometry written as code, a more focused option below will get you to a useful result faster.

Choose free CAD software by the file you need to produce

Start with the deliverable, not the longest feature list. A dimensioned 2D drawing needs lines, layers, snaps, dimensions, scale, and usually DXF or DWG for editing, plus PDF for review. LibreCAD is built for that job. A 3D mechanical part needs constrained sketches, solid features, and a design history you can revise; FreeCAD and Onshape fit that pattern.

STEP and Parasolid carry precise solid or surface geometry between CAD systems, but they generally don’t carry the original feature history. DXF and DWG are common drawing exchanges, though support varies by version and by entity. The native project file remains your editable master.

STL, OBJ, and 3MF are different. They describe a model as a mesh, which is useful for passing finished geometry to a slicer but awkward for changing a hole diameter or rebuilding a feature. Keep the source project as well as the exported mesh. Tinkercad’s mesh-first exit is acceptable for simple prints, but it’s a weak foundation for work that must move into another solid modeler.

Code-driven CAD has another kind of master: a text file containing variables and geometric operations. OpenSCAD is excellent when changing one value should generate a family of brackets, spacers, or enclosures. It’s much less natural for sculpted surfaces.

Rendering, slicing, toolpaths, and machine control happen after design. A CAD program’s STL or DXF export can support 3D printing or CNC, but it doesn’t replace those later steps.

What “free” CAD software can cost in restrictions and switching

Open-source desktop tools offer the cleanest bargain here. FreeCAD’s license permits private, commercial, and institutional use, and the project says you control the license on files you create. LibreCAD and OpenSCAD also run locally under open-source licenses. There’s no account renewal and no vendor cloud between you and the native file.

Restricted tiers need closer reading. Fusion for Personal Use is for home-based, non-commercial work, allows ten editable documents at once, and requires periodic requalification. Its files remain private, and STEP export is available, so it can be an appealing hobby option. It still isn’t a safe general recommendation if you may sell the result or do client work.

Onshape Free is also non-commercial, and every free-plan document is public. More seriously, its terms grant broad reuse rights to people who access those public documents. That rules it out for confidential inventions, unreleased products, and work you might later monetize.

A free trial is temporary evaluation, not free software. Education access depends on continuing eligibility and usually bars commercial work. Shapr3D Basic is genuinely ongoing, but its two-project cap and low-resolution STL/3MF-only export make it a poor escape route. Solid Edge Community allows personal, non-commercial use, while its native files won’t open in commercial Solid Edge and drawings are watermarked.

Before committing, perform a two-file exit check. Save a native, fully editable project; then export the file your next tool or collaborator needs. Reopen both somewhere appropriate. If all you can recover is a mesh, image, watermarked drawing, or history-free solid, price the likely rebuild into “free.”

Also ask who controls the editable copy. A STEP export preserves surfaces, but it usually arrives without the sketches, constraints, variables, and feature history that made the model easy to revise. That makes it a strong handoff and a weak backup of your design logic. For cloud tools, download a STEP or DXF at each milestone, not when you decide to leave later. For desktop tools, keep versioned native files and test older projects after upgrades. Portability isn’t merely whether an export button exists; it’s whether you can make the next change without rebuilding the project from scratch.

Best free CAD software by decision category

Best free CAD software overall: FreeCAD

FreeCAD wins overall because it combines a real parametric solid workflow with local files, useful interchange, three desktop platforms, and unrestricted use. Its official format list includes native FCStd, STEP, IGES, STL, DXF, and DWG, so you can keep feature history in the master and send precise or mesh geometry as needed. Current 1.1 releases continue to receive fixes and security updates.

That freedom doesn’t make FreeCAD effortless. An independent FreeCAD 1.1 review praised its control and format support but found a steep learning curve, buried options, and occasional stalls on complex models. The separate workbenches also make the program feel less coherent than commercial suites.

Fusion Personal is the closest alternative and often feels more polished, but it’s better only for private, non-commercial hobby projects whose owner accepts cloud dependence and license renewal. Do not pick FreeCAD if you need an immediately friendly interface or guaranteed vendor support.

Best free CAD software for beginners: Tinkercad

Tinkercad is the quickest route from a blank screen to a simple printable object. You drag primitive shapes onto a workplane, turn shapes into holes, group them, and type dimensions instead of first learning sketches and constraints. Autodesk supplies short, project-based lessons, and an independent 2026 assessment treats it as a successful learning gateway rather than a full professional modeler.

The closest alternative is Onshape. Choose it instead when the beginner’s real goal is to learn constrained sketches and feature-based parts that scale beyond a few Boolean operations. Tinkercad keeps the editable design in its service and exports STL or OBJ meshes, not STEP solids or a portable feature tree. Its terms say you retain ownership of your content, but built-in materials and anything you publish carry additional licensing conditions.

Do not pick Tinkercad if the project needs complex revisions, confidential offline work, or editable solid handoff.

Best free 2D drafting software: LibreCAD

LibreCAD is the focused choice for dimensioned plans, profiles, and shop drawings. It opens quickly, uses familiar commands, layers, snaps, and dimensions, and avoids loading a 3D modeling system for a flat deliverable. Version 2.2.1.5 has current Windows, macOS, and Linux packages. The project says it can read DXF/DWG and write DXF/DWG/PDF/SVG; its own FAQ warns that it doesn’t support every DXF feature.

A recent hands-on mechanical-drawing review found the compact workspace easy to focus on, while concluding it becomes a secondary tool once 3D enters the job. FreeCAD is the closest alternative and is better when the drawing must derive from a revisable solid model.

Test one representative DWG or DXF before migrating a library; format support on paper doesn’t guarantee every font, hatch, block, or layout will survive. Do not pick LibreCAD if you need 3D parts or flawless exchange with a specific AutoCAD workflow.

Best browser-based free CAD software: Onshape Free

Onshape Free delivers capable parametric parts, assemblies, drawings, version history, and collaboration through a modern browser. It’s the best specialist choice for an open project on a Chromebook or shared computer. Onshape’s current help supports major desktop browsers and says the primary requirement is a reliable connection. Export options include STEP, Parasolid, IGES, STL, 3MF, DXF, and DWG, although downloaded solids don’t include feature history.

FreeCAD is the closest alternative and better for private, commercial, or offline work. Onshape is better when installation is impossible and collaboration matters more than secrecy. Its public-by-default rule isn’t a minor footnote: free documents are searchable and licensed for broad third-party reuse.

Do not pick Onshape Free for confidential work, commercial projects, unreliable internet, or any design whose publication would hurt you.

Best code-driven free CAD software: OpenSCAD

OpenSCAD is the cleanest choice when geometry should behave like a program. Put dimensions in named variables, define reusable modules, and generate consistent variants from one plain-text source. That makes version control and repeatable families unusually straightforward. It runs locally on Windows, macOS, and Linux and exports STL, 3MF, DXF, SVG, and other mesh or 2D formats.

FreeCAD is the closest alternative and is better when a machinist or collaborator needs STEP geometry, drawings, or a GUI feature tree. OpenSCAD’s stable release is old even though development snapshots remain active, and its built-in editor is basic. A CHI 2024 user study found recurring difficulty linking visible parts back to code, managing complex scripts, applying spatial transforms, and creating organic shapes.

That evidence supports a narrow win, not a claim that coding is universally faster. Do not pick OpenSCAD if you think visually, need freeform surfaces, or must deliver editable B-rep solids.

Compare free CAD finalists with a starter-project and exit test

Don’t migrate a project after watching a polished demo. Give each plausible finalist the same small job: a mounting plate with two constrained holes and one rounded corner, or a one-page bracket drawing with dimensions and layers. Use dimensions and file types from your actual work.

Time four things separately: first correct result, changing one key dimension, recovering from one deliberate error, and producing both the native master and required handoff file. Then close the program, reopen the master, and inspect the export in the receiving app. A fast first shape can hide a painful revision model; a slower parametric setup may win as soon as the second size is requested.

Use this checklist:

• Confirm the license permits your present and likely future use.
• Verify the project is private enough before uploading real geometry.
• Change an early dimension and check every dependent feature.
• Export STEP or DXF when editable geometry matters; export STL/3MF only for a mesh handoff.
• Open the export elsewhere and check units, curves, dimensions, layers, and missing entities.
• Disconnect briefly if offline access matters, and confirm what still works.
• Estimate the cost of leaving with 20 completed projects, not just one.

Comparable public timing tests across current versions are scarce, so broad “easy” rankings are mostly impressions. Your representative revision-and-exit test is stronger evidence for your workflow than another generic feature score.

Questions about choosing free CAD software

Is completely free CAD software available for commercial work?

Yes. FreeCAD, LibreCAD, and OpenSCAD can be used for commercial work; their open-source licenses govern the programs, not ordinary output you create. Check licenses for imported models, fonts, libraries, and add-ons separately. Onshape Free, Fusion Personal, and Solid Edge Community are not commercial-use substitutes.

Do a free trial and a student license count as free CAD software?

Not for a general recommendation. A trial expires, while student access depends on eligibility and usually restricts use. Both can be useful for evaluation or coursework, but plan the exit before creating files you’ll need after access ends.

Can free CAD replace paid software for professional work?

Sometimes. A solo user making parts or drawings may get everything needed from FreeCAD or LibreCAD. Pay when a customer mandates a native format, certified translator, managed collaboration, specialist simulation, support contract, or validated workflow. The real test is whether the free tool produces the required deliverable reliably—not whether its menu resembles a paid suite.

What should a beginner try first?

Try Tinkercad for one simple printed object, LibreCAD for a flat drawing, or FreeCAD for a dimensioned mechanical part. If the sample can be revised and exported without a disqualifying limit, keep going. If not, switch before your project library grows.