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Rhino 3D Converter

Convert a 3DM file to other formats for free. Most formats need no sign-up or credit card; BLEND needs a free account.

Quick answer: 3DM is Rhino's open format, storing NURBS and mesh geometry, materials, layers and real-world units used in industrial and architectural design. Convert 3DM files to GLTF, GLB, OBJ, OFF, STL free in your browser — no sign-up, no watermark — or generate a 3DM model from a photo.

3DM (Rhino 3D Model): A proprietary file format (.3dm) for Rhino software by Robert McNeel & Associates. It stores NURBS-based 3D models, ideal for precise design in architecture and engineering. Or skip the conversion entirely — browse the free 3D furniture library.

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Convert from 3DM

3DM to 3DM
3DM to BIM
3DM to GLTF
3DM to GLB
3DM to OBJ
3DM to OFF
3DM to STL
3DM to PLY
3DM to BLEND

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What is a 3DM file used for?

3DM is Rhino's open format, storing NURBS and mesh geometry, materials, layers and real-world units used in industrial and architectural design. It is used mainly for cad, industrial and architectural design, and opens in Rhino, Grasshopper, Blender.

3DM converter — frequently asked questions

What is a 3DM file?
3DM is Rhino's open format, storing NURBS and mesh geometry, materials, layers and real-world units used in industrial and architectural design. It is used mainly for cad, industrial and architectural design.
How do I open a 3DM file?
3DM files open in Rhino, Grasshopper and Blender.
Is the 3DM converter free?
Yes. Converting 3DM files is free and has no watermark. Browser conversions need no sign-up (up to 20 a day) and take files up to 50 MB; FBX, SKP and BLEND exports run on our server, need a free account and take files up to 25 MB.
File Formats

3DM File Format Information

Detailed information about the 3DM file format, including its capabilities and specifications.

3DM Format

Extension:3DM
Full Name:Rhino 3D
Type:3D Model
Mime Type:application/octet-stream
Format:Binary
Opens With:Rhinoceros 3D

3DM (Rhino 3D Model): A proprietary file format (.3dm) for Rhino software by Robert McNeel & Associates. It stores NURBS-based 3D models, ideal for precise design in architecture and engineering.

3DM Converter Capabilities

When converting 3D model or mesh files using our 3DM converter, we will attempt to convert color materials into a suitable format for use in the converted file.

Information about 3DM format and its conversion capabilities

About the 3DM converter

FurniMesh's 3DM converter runs in your browser for most formats, using a WebAssembly glTF/3D-mesh pipeline — the file stays in your tab. FBX, SKP and BLEND exports run on our conversion server. Materials, UV maps, and scene hierarchy are preserved wherever the target format supports them. There's no sign-up for in-browser formats (up to 20 conversions a day) and no watermark.

FurniMesh natively outputs four formats — GLB, OBJ, SKP (SketchUp 2017+), and BLEND (Blender 3.0+). Bridge conversion via this converter additionally produces FBX, STL, GLTF, 3DM (Rhino), PLY and OFF, and reads IFC, DAE, 3DS and 3MF files. Use the converter to bridge between supported formats — or skip the conversion step entirely if you don't have a source file yet (the FurniMesh library ships every model in all four native formats pre-rendered).