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A LITTLE LESS FILE FRICTION

Faceted STEP to 3MF. A new format for your model.

Turn supported faceted STEP geometry into a 3MF file with declared units. Curved STEP surfaces are not supported.

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Your next file starts here Private workspace

Drop your file here

We’ll detect its format automatically.

or
STL, DXF, faceted STEP · One file, up to 20 MB
3D MODEL PREVIEW
  1. 1Choose file
  2. 2Preview & convert
  3. 3Download
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See it before you convert it.

Check the shape, size, and any import warnings. We show what can be kept before you download.

What can I open?

STL meshes, supported DXF drawings, and faceted STEP files.

What can I download?

Models: 3MF, STL, or faceted STEP.
Drawings: SVG or DXF.

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What does this STEP to 3MF conversion support?

Open supported polygonal, faceted STEP geometry; millimetres are assumed. Curved analytic STEP surfaces are not supported. The 3MF export contains triangle geometry with declared units, without recovered textures, materials, original CAD features or slicer settings.

Do my files leave this device?

Conversion runs locally in your browser. No account or file upload is needed. Choose one file up to 20 MB, check its preview and any warnings, then download the result. Keep this page open while it works.