What “free online 3D modeler” should actually mean
Search results for free browser 3D tools mix very different products: block-based education apps, AI mesh generators, collaborative web design tools, and full solid modelers. A useful free online 3D modeler for making real geometry should check a few boxes:
- No install — works in a modern browser on Windows, macOS, Linux, or Chromebook.
- Real modeling tools — not just templates or one-click generators.
- Honest free exports — STL/OBJ/GLB when you need to leave the app.
- Clear data story — where files live, whether an account is required, and whether free plans publish your work.
How ThreeMesh fits the free browser CAD landscape
| Tool | Best for | Tradeoff |
|---|---|---|
| ThreeMesh | Push/pull solids, local-first, free open export | No .skp warehouse / plugin ecosystem |
| SketchUp Free | Familiar spatial modeling + brand ecosystem | Account required; free-tier limits |
| Tinkercad | Education, quick solids, STEM | Block-based; weak for architectural detailing |
| Spline / Vectary | Interactive web/AR experiences | Different job than solid construction modeling |
| Onshape Free | Parametric mechanical CAD in browser | Free documents are typically public |
Features you get in ThreeMesh
- Line, rectangle, circle, arc, polygon, freehand drawing
- Push/pull, move, rotate, scale, offset
- Inference engine with axis locks
- Groups, components, tags, outliner, scenes
- Section planes, dimensions, materials, soften edges
- Solid tools and Follow Me-style sweeps
- Import STL / OBJ / FBX / glTF / SVG · export STL / OBJ / GLB / JSON / PNG / SVG
Who should start here
- Students and educators on shared machines or Chromebooks
- Woodworkers and makers who want dimensions without a subscription
- Architects and interior designers doing early massing and spatial studies
- 3D printing hobbyists modeling hard-surface parts for STL export
Ready to try a free online 3D modeler that stays on your device until you export? Open ThreeMesh or read how we compare as a SketchUp Free alternative.