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What is BREP file and how to open it?

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What is BREP extension?

A Brep file is a 3D model stored in the boundary representation (also known as B-rep). The Brep format is a part of Open CASCADE Technology (OCCT).

The Brep structure is made up of two major components:

  • topological components such as faces, vertices, and edges;
  • links between components such as surfaces, points, and curves.

It comprises three-dimensional data such as vertices, edges, wires, faces, shells, solids, compounds, edge and face triangulations, polylines on triangulations, space location, and orientation.

Software to open and edit BREP files:

Formats list

Convert BREP
files

Need to work with CAD files in numerous formats? No worries.

Convert BREP files across 30+ other 3D formats.

Learn how to open BREP in CAD Exchanger

How To Import (Read) and Export (Write) BREP files

Export (Write) Open CASCADE files

Convert 3D PDF (.pdf) to Open CASCADE (.brep)Convert 3DS (.3ds) to Open CASCADE (.brep)Convert CATIA V6 (3D XML) (.3dxml) to Open CASCADE (.brep)Convert 3MF (.3mf) to Open CASCADE (.brep)Convert ACIS (.sat, .sab) to Open CASCADE (.brep)Convert Open CASCADE (.brep) to Open CASCADE (.brep)Convert CATIA V5 (.CATPart, .CATProduct) to Open CASCADE (.brep)Convert Collada (.dae) to Open CASCADE (.brep)Convert PTC Creo (.prt, .asm) to Open CASCADE (.brep)Convert DWG (.dwg) to Open CASCADE (.brep)Convert DXF (.dxf) to Open CASCADE (.brep)Convert FBX (.fbx) to Open CASCADE (.brep)Convert glTF (.gltf, .glb) to Open CASCADE (.brep)Convert IFC (.ifc) to Open CASCADE (.brep)Convert IGES (.igs, .iges) to Open CASCADE (.brep)Convert Inventor (.ipt, .iam) to Open CASCADE (.brep)Convert JT (.jt) to Open CASCADE (.brep)Convert Siemens NX (.prt) to Open CASCADE (.brep)Convert OBJ (.obj) to Open CASCADE (.brep)Convert Parasolid (.x_t, .x_b) to Open CASCADE (.brep)Convert PLY (.ply) to Open CASCADE (.brep)Convert PRC (.prc) to Open CASCADE (.brep)Convert Revit (.rvt) to Open CASCADE (.brep)Convert Rhino (.3dm) to Open CASCADE (.brep)Convert Solid Edge (.asm, .par, .psm) to Open CASCADE (.brep)Convert SOLIDWORKS (.sldprt, .sldasm) to Open CASCADE (.brep)Convert STEP (.stp, .step) to Open CASCADE (.brep)Convert STL (.stl) to Open CASCADE (.brep)Convert U3D (.u3d) to Open CASCADE (.brep)Convert VRML (.wrl) to Open CASCADE (.brep)Convert X3D (.x3d) to Open CASCADE (.brep)

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