Convert 3MF to STL
Drop your 3MF files and download them as STL — free, in batch, and they never leave your device.
3MF → STL: what you should know
3MF is STL's modern successor for 3D printing: meshes with units, colors and print metadata. It's used mostly in modern 3D printing (PrusaSlicer, Bambu Studio, Windows 3D), and it stores geometry with units, colors, materials and metadata. STL, on the other hand, is the standard format of 3D printing: a triangle mesh with no explicit units, no color and no materials — the format expected by slicers (Cura, PrusaSlicer, Bambu Studio), FDM and resin 3D printing, CAD.
This tool converts your 3MF files to STL right in the browser: no queue, no artificial size limit and, above all, your file is never uploaded to any server. Geometry is preserved with the exact coordinates and scale of the original — important if the model is going to be printed or measured.
Keep in mind: STL stores geometry only: materials, textures and colors are lost. If you need to keep that data, convert to a format that supports it (GLB keeps materials and textures; PLY keeps vertex colors).
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