3MF Converter

Convert 3MF files into any popular 3D format, or turn another 3D file into 3MF. Everything runs in your browser, so there is no upload, no login, and no software to install.

Drag and drop file here or click to upload

.3MF

Max file size: 50 MB

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What You Get with Meshy's 3D Model Converter

All Major 3D Formats

Convert between OBJ, FBX, STL, GLB, GLTF, USDZ, 3MF, PLY and more — the format set that covers games, printing, AR/VR and product visualization pipelines.

Geometry & Texture Fidelity

Meshes keep their geometry, normals, UVs and material colors through conversion. GLB and GLTF round-trips preserve textures so your asset looks the same in every engine.

No Install, No Signup

Everything runs in the browser. Upload a model, pick a target format, download the result — no software, no account, no upload queue.

Everything You Need to Convert 3D Files

Popular file formats support

Work seamlessly with industry-standard formats including OBJ, USDZ, STL, GLTF, and more. Eliminate compatibility barriers between different 3D applications with comprehensive format conversion options.

No login & download required

Convert files instantly in your browser without software installation or account creation. Upload your 3D asset, select your output format, and transform your model with zero unnecessary steps.

Free to all 3D creators

Access professional-grade conversion technology at zero cost. We’ve removed financial barriers to empower students, indie developers, hobbyists, and professional studios with enterprise-level 3D conversion tools.

Insanely fast

Transform complex models in seconds rather than minutes with our optimized algorithms. Experience conversion speeds up to 10× faster than traditional desktop applications, accelerating your production workflow.

Privacy protection

Your intellectual property remains secure. Files are processed at client side and will never leave your browser or uploaded to our server, ensuring complete confidentiality.

About the 3MF File Format

The .3mf file format was introduced by the 3MF Consortium in 2015 as a modern replacement for STL in additive manufacturing. A 3MF file is a ZIP package: an XML model part holds the mesh, plus optional parts for materials, colour and print settings, so one file can describe both geometry and how it should be printed. Its unit is always millimetres, which is why slicers trust it without a scale prompt. The format carries per-object and per-face colour; this converter reads the whole package and writes the geometry back.

Developer: 3MF Consortium (originally Microsoft)
Based On: 3MF Core Specification (OPC package + XML model)
Common Software: Bambu Studio, PrusaSlicer, OrcaSlicer, Microsoft 3D Builder

What Survives Conversion to 3MF

Every 3D format carries a different slice of a scene. This is exactly what Meshy's converter writes into a 3MF file, and what it leaves behind.

Model data	Result
Mesh geometry	Preserved
UV coordinates	Dropped
Materials and textures	Dropped
Animation and rigging	Dropped
Vertex colors	Dropped

Geometry is what survives. Meshy's 3MF writer merges every mesh in the scene into a single object and writes the Core specification's mesh part with one white filament — the container can carry UVs, materials and per-object colour, but this export does not write them. Assign filaments per part in Bambu Studio, PrusaSlicer or OrcaSlicer after downloading, or convert to GLB or FBX when the appearance data has to travel with the model.

Who Converts 3D Models with Meshy?

3D Printing Hobbyists

Turn game rips, downloaded models, or CAD exports into STL for your slicer — swap FBX to STL without learning a DCC tool.

Game Developers

Convert assets between engine-friendly formats: OBJ to GLB for web builds, FBX to GLTF for runtime loading, without breaking materials.

E-commerce & Product Teams

Prepare product models for 3D viewers on storefronts — GLB and USDZ cover every major platform's viewer format.

Architects & Visualizers

Bring CAD and SketchUp models into real-time renderers and AR previews by converting to the formats your toolchain accepts.

How to Convert 3D File Formats

Related Converters

Other Popular 3D Tools

Online 3D Viewer

VOX Viewer USDZ Viewer OBJ Viewer GLB Viewer 3MF Viewer PLY Viewer STL Viewer FBX Viewer

3D File Tools

STL Repair STL Editor 3D Model Editor 3D Polygon Reducer 3D File Compressor 3D Model Splitter Normal Map Generator

Frequently Asked Questions

3MF is a ZIP package holding the mesh plus materials, colour and print settings, and it always declares millimetres; STL is a bare triangle list with no units, colour or structure. Both are print formats, but 3MF is the one that can describe what a model is made of. Meshy's 3MF export writes geometry only, so colour is something you add in the slicer.

No. The export merges the scene into one object with a single white filament, so per-object and per-face colour from the source does not survive. Open the .3mf in Bambu Studio, PrusaSlicer or OrcaSlicer and assign filaments per part — the geometry is already correct.

Because it is the largest single conversion cluster we see: people who downloaded a .3mf from a model site need a plain triangle mesh for a tool that only reads STL. STL discards colour and materials, so use the reverse direction — STL to 3MF — when you want a slicer-ready package instead.

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Start Converting Your 3D Files Now

Fast, free, and secure — convert between OBJ, FBX, STL, GLB, and more right in your browser.

3MF Converter