How to convert STL to BREP
- Add your .STL file - drop it in the box above or click to browse.
- Convert it to .BREP in a few seconds.
- Download your new .BREP file.
What to expect
- The result is faceted: triangles are wrapped as geometry, not rebuilt into smooth surfaces.
- No parametric features or design history are created; it is plain boundary geometry.
- STL has no units, so scale should be verified after conversion.
Frequently asked questions
Does STL to BREP recreate smooth CAD surfaces?
No. STL describes the shape only as flat triangles, so the BREP result is built from those facets; it does not reconstruct the smooth analytic surfaces a native CAD model would have.
Why convert STL to BREP?
BREP is the boundary-representation format used by the OpenCASCADE geometry kernel, so this is useful for bringing a mesh into a CAD program like FreeCAD that works in solids and surfaces.
Will I get editable parametric features?
No. STL carries no design history or parameters, so the BREP is plain geometry without the feature tree or parametric editing of an original CAD part.
Are there unit concerns?
Yes. STL stores no units, so the numeric dimensions are carried as-is and you may need to confirm the intended scale in your CAD tool after conversion.
