OBJ → 3DM

Convert OBJ to 3DM

Convert OBJ files to 3DM in seconds. Geometry, UVs and materials are carried over where 3DM supports them, and the model lands the right way up.

  • Geometry, UVs and materials kept where supported
  • Correct orientation and scale
  • Runs on your computer: nothing is uploaded
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Drop an OBJ file or
Files stay on your computer.
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How to convert OBJ to 3DM

  1. Add your OBJ file

    Drop it on the converter above or click browse. It opens in your browser, so nothing is uploaded.

  2. Check the format is 3DM

    3DM is already selected. You can switch to any other output from the menu.

  3. Convert and download

    Click Convert and your 3DM file is ready in seconds. Download it straight away.

What is OBJ?

OBJ is a plain-text mesh format with optional texture coordinates and normals; materials and textures live in a companion .mtl file. It opens almost everywhere, from Blender to 3D printing software.

Full name
Wavefront OBJ
Type
Triangle mesh
Used in
Blender, Maya, 3ds Max, Cinema 4D, ZBrush, most slicers
Strength
Opens in nearly every 3D program and keeps textures through its .mtl file.
Limits
No animation; large files because it is text.
More about OBJ

What is 3DM?

3DM is the native file of Rhino, used widely in industrial, jewellery and architectural design. It stores NURBS surfaces, SubD objects, meshes and block instances.

Full name
Rhinoceros 3D model (openNURBS)
Type
Exact CAD geometry
Used in
Rhino, Grasshopper, KeyShot, Blender (with add-on)
Strength
Rich surface modelling data from Rhino.
Limits
Surfaces are converted using the render meshes Rhino saves in the file.
More about 3DM

Good to know

If your OBJ has companion files (.mtl and texture images), select them together with the OBJ file so materials come through.

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Questions

Are materials and textures kept?

Colours and texture coordinates are carried over when 3DM supports them. Texture images are kept for formats that can hold them.

Will my model be upside down?

No. OBJ and 3DM may use different "up" directions, and we rotate the model so it stands the same way in your software.

Are my files uploaded?

No. The conversion runs inside your browser.