Free Online Rhino 3D Viewer (No Signup)
Works in Chrome, Firefox, Safari, and Edge — no plugin required
What Is a Rhino 3D File?
The .3dm format stores precise NURBS curves and surfaces, polysurfaces (BReps), meshes, SubD objects, annotations, layers, materials, and viewport setups. It’s the standard exchange format for Rhinoceros and the openNURBS Initiative — over 400 applications, including Grasshopper, V-Ray, KeyShot, and many CAM tools, read and write .3dm directly.
If you’ve received a .3dm file from an architect, jeweler, or industrial designer, you can view it instantly with this free tool — no Rhino license required.
Who Uses 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.
Common Use Cases
- Open a colleague’s Rhino model on a machine without Rhino installed
- Quick design reviews from a phone or tablet
- Convert .3dm to STL for 3D printing or CNC
- Convert .3dm to GLB for web/AR presentation
- Generate a PDF snapshot for documentation or submittals
Features
Open Instantly
Drag and drop a .3dm file — it renders in seconds using McNeel’s openNURBS WebAssembly library.
3D Navigation
Orbit, pan, and zoom with mouse or touch to explore every angle.
Layer Tree
Browse the file’s layer structure and toggle visibility of individual layers.
BRep + Mesh Support
Renders Rhino BReps via their stored render mesh, polygon meshes natively, and SubD objects via control-net subdivision.
Convert to GLB
Export your .3dm as a GLB file — the universal 3D format supported by Blender, Unity, and web viewers.
Convert to OBJ
Save as Wavefront OBJ for use in 3ds Max, Maya, Cinema 4D, and other modeling tools.
Convert to STL
Export a triangulated STL mesh ready for 3D printing, CNC, or simulation.
Export as PDF
Save the current view as a clean PDF — ideal for design presentations and reviews.
No Upload Required
Your .3dm file is parsed entirely in your browser. Nothing leaves your computer.
Embed on Any Site
Add the Rhino viewer to your website with a single iframe embed code.
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.
Embed on Your Website
Add this viewer to your own site with a single line of HTML. Click Embed in the toolbar to generate an embed code, or use the snippet below with your own file URL.
Your Files Stay on Your Computer
Your Rhino 3D files are parsed entirely in your browser. Nothing is uploaded, stored, or shared unless you explicitly click the Share button. Shared files are hosted for 90 days then deleted.
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.