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3MF to OBJ converter

Drop your .3mf file — we convert it to .obj right in your browser. Files never leave your computer.

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Drop your 3MF file here
Accepts .3mf · converts to .obj

3MF vs OBJ— what's the difference?

3MF.3mf

Modern successor to STL for 3D printing — carries units, colours, materials, and multiple bodies in a zipped XML package.

Strengths
  • Real-world units baked in (no more "is this mm or inches?")
  • Multi-material, multi-colour, and per-body metadata
  • Compact zipped payload — smaller than equivalent STL
Limitations
  • Not every slicer reads 3MF yet (most do now — Bambu, Prusa, Cura)
  • Less tooling for mesh editing compared to STL
Typical use: Modern 3D printing workflows, multi-material prints
OBJ.obj

Human-readable Wavefront mesh format — ubiquitous in 3D graphics, game art, and asset pipelines. Pairs with a .mtl material file.

Strengths
  • Supported by virtually every 3D tool (Blender, Maya, 3ds Max, Unity, Unreal…)
  • Plain-text, easy to diff and hand-edit
  • Keeps UV coordinates and vertex normals, unlike STL
  • Material references via companion .mtl file
Limitations
  • Text format — larger on disk than binary meshes
  • No scene hierarchy, no animation, no skeletons
  • Materials live in a separate file; easy to lose
Typical use: 3D art pipelines, DCC handoff, asset archives

How to convert 3MF to OBJ

  1. 1
    Drop a .3mf file onto the page. Works with output from Bambu Studio, PrusaSlicer, Cura, and OrcaSlicer.
  2. 2
    Preview the combined mesh in 3D — multi-body 3MFs flatten into one geometry for the OBJ.
  3. 3
    Click Download .OBJ. Open directly in Blender, Maya, 3ds Max, or any Wavefront viewer.

FAQ

Why convert 3MF to OBJ?

3MF is great inside a slicer but most DCC tools still prefer OBJ. If you want to tweak a print in Blender before slicing, or hand a model to someone without a 3MF-aware viewer, OBJ is the universal choice.

Will multi-body 3MFs preserve each body?

OBJ supports grouping via g/o tags and the three.js 3MF loader mounts each body as a child node. The exported OBJ keeps them as separate named groups, which Blender and Maya import as distinct objects.

Does colour / material come across?

OBJ has no per-body material data in its base spec, and the converter does not write a companion .mtl — so colour and material properties are dropped. For a print-ready round-trip, prefer 3MF → STL (lossless mesh with no material question).

What about units?

3MF stores units explicitly; OBJ does not. The converter outputs the raw numeric coordinates, so the OBJ in Blender will load at the same scale the 3MF was authored in (typically mm).

Is anything uploaded?

No. The 3MF is unzipped in your browser via three.js and re-exported as OBJ locally. Your file never leaves your device.

Related converters

3MF → STLSTL → OBJOBJ → 3MFSTL → 3MF