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← 3D Model Converter

Convert 3MF to STL online

Drop a .3mf file to turn it into STL. You see the model in 3D before converting, and the file never leaves your device.

What is kept when converting 3MF to STL

Geometry: Kept
Materials: Lost
Textures: Lost
Animation: Not in 3MF
Scene hierarchy: Lost

About 3MF

3D Manufacturing Format

3MF is the modern 3D printing format: units, colors, multiple objects and print settings in one zip archive.

About STL

Stereolithography

STL describes only the surface of a model as triangles — no colors, materials or textures. It is the default format for 3D printing and slicers.

How it works

01
Drop the .3mf file (with its textures or .bin/.mtl files, if any).
02
Check the model in the 3D preview; STL is already selected.
03
Click “Convert” and the .stl file downloads.

Questions

Is the 3MF to STL converter free?+

Yes, without limits, sign-up or watermark.

Is my 3MF file uploaded?+

No. The 3MF file is read and converted in your browser; nothing is sent to a server.

Why are textures missing after converting 3MF?+

Textures stored as separate files must be selected together with the model. STL keeps them only if the format supports textures.

Convert 3MF to other formats

3MF → GLB 3MF → glTF 3MF → OBJ 3MF → PLY 3MF → USDZ

Convert other formats to STL

GLB → STL glTF → STL FBX → STL OBJ → STL PLY → STL DAE → STL USDZ → STL 3DS → STL VOX → STL VRML → STL 3DM → STL AMF → STL LWO → STL KMZ → STL MD2 → STL VTK → STL SVG → STL

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