Convert Rhino 3D to GLB, OBJ, STL, PDF (Free)
No upload, no signup, no software to install
Why Convert Rhino 3D Files?
Rhino is widely used by architects, industrial designers, jewelers, marine designers, and parametric/computational designers (often via Grasshopper). The .3dm format is the standard hand-off for organic and freeform geometry.
Converting to a more widely supported format means your model can open in any 3D tool, slicer, web viewer, or AR app — without asking the recipient to install specialized software.
How to Convert a Rhino 3D File
- 1
Open your Rhino 3D file
Click "Open a Rhino 3D File" above, or drag and drop your .3dm file onto the converter.
- 2
Choose an output format
Click the "Export" button in the toolbar and select GLB, OBJ, STL, PDF.
- 3
Download the converted file
Your file downloads instantly. Everything runs in your browser — nothing is uploaded.
Output Formats
Rhino 3D to GLB (glTF Binary)
Universal 3D format. Open in Blender, Unity, Unreal Engine, web viewers, AR/VR apps, and Google’s model-viewer. Materials, textures, and PBR survive the round trip.
Rhino 3D to OBJ (Wavefront)
One of the most universally supported 3D formats. Import into 3ds Max, Maya, Rhino, Cinema 4D, MeshLab, or virtually any 3D application.
Rhino 3D to STL (Stereolithography)
The standard for 3D printing. Upload directly to your slicer (Cura, PrusaSlicer, Bambu Studio) or a 3D printing service. Also used for CNC machining and FEA simulation.
Rhino 3D to PDF (Snapshot)
Export the current camera view as a one-page PDF with header and footer captions — ideal for presentations, submittals, and email handoffs.
Compatibility & Format Notes
This viewer uses McNeel’s open-source rhino3dm WebAssembly library so it supports the same .3dm file versions Rhino itself reads.
BReps and NURBS surfaces render through their stored render mesh. If a file was saved without render meshes (rare but possible), BReps will appear empty — re-saving the file from Rhino with “Save as” and enabling render meshes fixes this.
Your Files Stay on Your Computer
Both parsing and conversion run entirely in your browser. The exported files are generated locally and downloaded directly to your device — nothing is uploaded to any server.
Frequently Asked Questions
▶Which Rhino versions are supported?
All Rhino versions that produce a valid .3dm file are supported, including Rhino 4, 5, 6, 7, and 8. The viewer uses the same openNURBS reader Rhino itself ships with, so compatibility tracks the latest published .3dm archive version.
▶Do I need Rhino installed to open .3dm files?
No. Rhino is not required. This free online viewer uses McNeel’s open-source rhino3dm library compiled to WebAssembly — everything runs in your browser.
▶What about NURBS curves and surfaces?
BReps and NURBS surfaces render through the file’s stored render mesh, the same way Rhino displays them in shaded view. The underlying NURBS math is preserved in the file but not displayed as analytic surfaces in the viewer.
▶Can I convert Rhino .3dm to STL for 3D printing?
Yes. Click Export → STL in the toolbar. The triangulated mesh is generated from the .3dm render meshes and downloads instantly.
▶Is this Rhino viewer really free?
Yes, completely free. No signup, no watermarks, no file size limits on the viewer (the optional share-link feature has a 30 MB upload cap). Built by Innerscene as a tool for architects, engineers, and designers.
▶Are my files uploaded to a server?
No. All parsing, rendering, and conversion runs in your browser — nothing is uploaded, stored, or transmitted by default. The Share button is the only feature that uploads a file, and only when you explicitly click it.
▶Can I convert to another format?
Yes. Click Export in the toolbar to save as STL (3D printing), OBJ (Wavefront), GLB (glTF binary), or PDF (snapshot of the current view).
▶Can I embed this viewer on my own site?
Yes. Click Embed in the toolbar to generate a one-line <iframe> snippet you can paste into any HTML page. You can choose whether the embed shows the viewer’s toolbar.
Rhino and Rhinoceros are trademarks of Robert McNeel & Associates. Innerscene is not affiliated with McNeel.