Convert STL to USDZ
Convert STL files to USDZ locally, completely free and with maximum privacy.
Drag and drop your files here
or click to browse local files (large files supported, limited only by browser RAM)
Upload FilesPlatform Statistics
How to convert STL to USDZ
- Drop your .stl files above, or click Upload Files. You can add many files at once.
- USDZ is already selected as the output. Open the settings (gear icon) to fine-tune the result.
- Click Convert All. Assimp and three.js runs inside your browser through WebAssembly; nothing is uploaded.
- Download your .usdz files as soon as each one finishes.
What to know about STL to USDZ conversion
- Geometry, materials and embedded textures are preserved in the USDZ output when the source contains them.
STL vs USDZ
| Feature | STL (Stereolithography) | USDZ (Universal Scene Description (Zip)) |
|---|---|---|
| Materials and textures | No | Yes |
| Animation and rigging | No | Yes |
| Best for | 3D printing and CAD workflows | AR Quick Look on iPhone and iPad |
| Opens in | Cura, PrusaSlicer, Bambu Studio and CAD software | iOS, iPadOS, macOS and Reality Composer |
STL (Stereolithography): The standard mesh format for 3D printing and CAD, storing triangulated surfaces.
USDZ (Universal Scene Description (Zip)): Apple's AR Quick Look format based on Pixar USD, viewable natively on iPhone and iPad.
Conversion options
- Custom output file name
Frequently asked questions
Is it safe to convert STL to USDZ here?
Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.
Is there a file size limit?
There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.
Can I convert several STL files at once?
Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.
Related conversions
Convert STL to other formats
Convert other formats to USDZ
- OBJ to USDZ
- GLB to USDZ
- FBX to USDZ
- GLTF to USDZ
- PLY to USDZ
- DAE to USDZ
- 3DS to USDZ
- 3MF to USDZ
- X to USDZ
- OFF to USDZ
See every STL converter and USDZ converter, or browse the full converter directory.