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Convert BREP to STL Online for Free

Transform your Boundary Representation files into STL (Stereolithography) format. BREP is a boundary representation format storing exact mathematical definitions of 3D solid surfaces, edges, and vertices. Convert online — no software installation needed.

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Why Convert BREP to STL?

BREP (Boundary Representation) is a boundary representation format storing exact mathematical definitions of 3D solid surfaces, edges, and vertices. As a proprietary format native to FreeCAD, OpenCascade, and other open-source CAD platforms using the BREP kernel, BREP files require specific software licenses to open and edit.

Converting BREP to STL removes this software dependency, enabling you to share your engineering models with anyone — regardless of what CAD platform they use.

Our online converter handles the entire process server-side with industrial-grade engines. No software installation, plugins, or expensive licenses required — just upload and download.

How to Convert BREP to STL

  1. Upload your .brep file using the upload area above.
  2. Select STL as the target output format.
  3. Click "Convert" and wait while our server processes your file.
  4. Download your converted .stl file — ready to use in your workflow.

Key Benefits

  • Accurate BREP to STL conversion with professional-quality output
  • No need to install FreeCAD or any other software
  • 100% online processing — works in any modern web browser
  • Secure file handling with automatic deletion after conversion
  • Supports files up to 50MB (100MB for registered users)

Frequently Asked Questions

Is the BREP to STL conversion free?

Yes, completely free for files up to 50MB. Registered users get extended limits up to 100MB per file.

Will the conversion preserve my model accurately?

Yes. Our conversion engine preserves geometry, surfaces, and data as closely as the STL format supports.

What software creates BREP files?

BREP files are created by FreeCAD, OpenCascade, and other open-source CAD platforms using the BREP kernel.

Do I need to install any software?

No. The entire conversion runs online in the cloud — just upload your file and download the result.

How long does conversion take?

Most conversions complete within 10–30 seconds depending on file size and complexity.

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