step to 3mf
Convert STEP to 3MF
Free STEP to 3MF converter. Runs in your browser, so the file never leaves your computer. Preview the model, then download the 3MF.
Good to know
3MF keeps the units and the separate parts of an assembly, so the slicer can place and color each one.
How it works
- 1Drop your STEP file in the box above. It is read in your browser.
- 2Check the preview. Pick a finer mesh quality for smoother curves, or coarser for a smaller file.
- 3Download the 3MF. It opens in Bambu Studio, PrusaSlicer, and OrcaSlicer.
What carries over
- Shape
- Kept
- Colors
- Kept
- Materials
- Dropped
- Units
- Kept
- Separate parts
- Kept
- Exact curves
- Dropped
About STEP
STEP (ISO 10303 STEP). The ISO standard for exchanging exact CAD solids. Faces are true curves, not triangles, so another CAD program can edit and dimension them.
Units: Explicit. Usually millimeters. Up axis: Z. Opens in Fusion, SolidWorks, Onshape, FreeCAD, and Inventor.
About 3MF
3MF (3D Manufacturing Format). The modern printing format from the 3MF Consortium. A zip with named parts, units, colors, and slicer settings. Bambu, Prusa, and Orca save projects in it.
Units: Explicit. Usually millimeters. Up axis: Z. Opens in Bambu Studio, PrusaSlicer, OrcaSlicer, Cura, and Windows.
Questions
- Is the STEP to 3MF converter free?
- Yes. You get 3 runs a month without an account. Sign in with your email, free, and there is no limit.
- Is my file uploaded?
- No. The file is read and converted in your browser. It never reaches our servers.
- Will the 3MF keep colors and materials?
- Where the STEP has them, yes.
- What units is the 3MF in?
- STEP: Explicit. Usually millimeters. 3MF: Explicit. Usually millimeters. The converter does not guess. Use the scale option if the size looks wrong.
- How do I open a 3MF file?
- Bambu Studio, PrusaSlicer, OrcaSlicer, Cura, and Windows all open 3MF.
Related tools
All tools- Convert STEP to STLFree STEP to STL converter. Runs in your browser, so the file never leaves your computer. Preview the model, then download the STL.
- Convert STEP to OBJFree STEP to OBJ converter. Runs in your browser, so the file never leaves your computer. Preview the model, then download the OBJ.
- Convert STEP to GLBFree STEP to GLB converter. Runs in your browser, so the file never leaves your computer. Preview the model, then download the GLB.
- STEP viewer onlineOpen STEP files in your browser. Measure distances and holes, cut a section, check it is watertight, and see the print weight. No install, nothing uploaded.
- 3MF viewer onlineOpen 3MF files in your browser. Measure distances and holes, cut a section, check it is watertight, and see the print weight. No install, nothing uploaded.
- Convert STL to 3MFFree STL to 3MF converter. Runs in your browser, so the file never leaves your computer. Preview the model, then download the 3MF.
- Convert STL to STEPFree STL to STEP converter. Runs in your browser, so the file never leaves your computer. Preview the model, then download the STEP.
- Convert IGES to STEPFree IGES to STEP converter. Runs in your browser, so the file never leaves your computer. Preview the model, then download the STEP.