BREP → FBX

Convert BREP to FBX

Turn a BREP CAD model into an FBX mesh. Curved surfaces are meshed finely enough to stay smooth, and the part keeps its real size and orientation.

  • Fine, accurate meshing of curved surfaces
  • Real size and right way up
  • Runs on your computer: nothing is uploaded
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Drop a BREP file or
Files stay on your computer.
Done

How to convert BREP to FBX

  1. Add your BREP file

    Drop it on the converter above or click browse. It opens in your browser, so nothing is uploaded.

  2. Check the format is FBX

    FBX is already selected. You can switch to any other output from the menu.

  3. Convert and download

    Click Convert and your FBX file is ready in seconds. Download it straight away.

What is BREP?

BREP is the native exact-geometry format of the OpenCascade kernel, used by FreeCAD, CadQuery and many engineering tools built on it.

Full name
OpenCascade boundary representation
Type
Exact CAD geometry
Used in
FreeCAD, CadQuery, Salome, OpenCascade-based tools
Strength
Lossless for OpenCascade-based software.
Limits
Rarely supported outside the OpenCascade family.
More about BREP

What is FBX?

FBX is Autodesk's scene format for games and animation. It carries meshes, materials, hierarchies and animation, and it is the usual way to bring models into Unity and Unreal Engine.

Full name
Filmbox (Autodesk)
Type
3D scene (meshes, materials)
Used in
Unity, Unreal Engine, Maya, 3ds Max, Blender, MotionBuilder
Strength
The default import format for game engines.
Limits
Closed specification; versions differ between programs.
More about FBX

Good to know

BREP stores exact surfaces; FBX needs triangles. We mesh each surface with a deviation of 0.05% of the part's size, which keeps holes and fillets smooth for printing and rendering.

Dimensions stay in the units of the original file, usually millimetres.

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Questions

Will curves look faceted?

No. Curved faces are meshed with a tight tolerance, so holes and fillets stay smooth.

Does it keep the size of my part?

Yes. The mesh has the same dimensions as the CAD model.

Are my files uploaded?

No. Everything runs in your browser.