Convert STP to USDZ
Convert a STP file to USDZ in your browser. Free, no upload, no sign-up.
Convert STP files to USDZ directly in your browser. The converter reads the exact STP geometry with the OpenCascade CAD kernel running in WebAssembly, tessellates it at the quality you choose and writes a USDZ file. Nothing is uploaded, there is no file size limit beyond your computer's memory, and the result downloads instantly. USDZ lets iPhone and iPad users view the model in augmented reality directly from Safari, with no app required.
How to convert STP to USDZ
- 1Drop your STP file
Drag a .stp file onto the box above or click to choose one. Tessellated in the browser with OpenCascade. Mesh density is adjustable; the first load downloads a 7 MB engine.
- 2Pick the mesh quality
Fine gives smoother curves and a larger file, coarse keeps large assemblies light. The default suits most 3D printing jobs.
- 3Check the preview
The model renders in 3D so you can confirm it loaded correctly. Dimensions, volume and triangle count are shown next to it; open edges are flagged if the mesh is not watertight.
- 4Download the USDZ
Adjust the export options if needed and click download. Geometry and basic materials are exported. Meshes without materials get a neutral gray so AR Quick Look renders them.
What is a STP file?
.stp is simply the three-letter extension for a STEP file (ISO 10303-21). SolidWorks, Inventor and many Windows CAD tools default to .stp while others use .step; the content is identical. It stores exact B-rep solids with units, not triangles.
Commonly used by: SolidWorks, Inventor, Creo, NX, supplier CAD downloads
Tessellated in the browser with OpenCascade. Mesh density is adjustable; the first load downloads a 7 MB engine.
What is a USDZ file?
USDZ is Apple's packaging of Pixar's Universal Scene Description. It is the format iOS uses for AR Quick Look: open a .usdz link in Safari and the model appears in your room through the camera. It stores meshes, PBR materials and textures in a single uncompressed ZIP.
Commonly used by: Apple AR Quick Look, iPhone and iPad, Reality Composer, Pixar USD pipelines
USDZ lets iPhone and iPad users view the model in augmented reality directly from Safari, with no app required.
STP vs USDZ
| STP | USDZ | |
|---|---|---|
| Full name | STEP file (.stp extension) | Universal Scene Description (zipped) |
| Encoding | Text | ZIP container |
| Geometry type | Exact (B-rep / curves) | Triangle mesh |
| Colors | Yes | Yes |
| Textures | No | Yes |
| Materials | No | Yes |
| Stores units | Yes | Yes |
| Multiple objects | Yes | Yes |
| Typical use | SolidWorks, Inventor, Creo | Apple AR Quick Look, iPhone and iPad, Reality Composer |