Free BREP (.brep, .brp) to USDZ (.usdz) converter — running entirely in your browser. No upload, no signup, no file limits: your files never leave your device.
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BREP is the native geometry format of the open-source CAD kernel that this site and many engineering tools are built on. It stores exact topology and geometry — faces, edges, vertices and the surfaces that carry them — with full fidelity for applications built on that kernel.
USDZ packages Pixar’s Universal Scene Description into a single uncompressed ZIP for Apple’s AR Quick Look. An iPhone or iPad can open a USDZ link directly into augmented reality from Safari — no app required — which makes it the format for AR product previews on Apple devices.
| BREP | USDZ | |
|---|---|---|
| Geometry | Exact B-rep topology | USD mesh scenes |
| Units | Model units | Meters (implied) |
| Colors & materials | No | PBR materials |
| Animations | No | Yes |
| Typical use | Open-source CAD kernel workflows | Apple AR Quick Look |
Yes — free with no accounts, no watermarks and no file-size limits. Conversion runs on your own machine, so there are no server costs behind it.
No. The converter runs entirely in your browser using WebAssembly. Your .brep file never leaves your device, which makes it safe for confidential designs.
BREP stores exact CAD surfaces, which are tessellated into triangles at a quality you choose — from fast drafts to near-exact precision meshes. Preview the result in the built-in 3D viewer before downloading.
Yes. Every converted model opens in the built-in 3D viewer with an assembly tree, display modes and section views, so you can inspect the result first.
BREP stores exact boundary surfaces, but every output available here is a triangle mesh. Tessellation is irreversible: feature history, constraints and analytic curves cannot be recovered from the converted file. The USDZ result contains the converted geometry and flat colors, but no source textures, rigs or animation tracks.
What do tessellation quality settings actually control? Linear and angular deflection explained with practical presets for 3D printing, rendering and web delivery.
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