How to convert OBJ to USDZ
- Drop your .obj file into the box above, or click Choose file.
- Check the 3D preview, size and triangle count.
- Make sure USDZ is selected as the output format. Adjust scale or up-axis if needed.
- Click Download. The .usdz file is created instantly on your device.
Why convert OBJ to USDZ?
USDZ is what iPhone and iPad use for AR Quick Look. Converting OBJ to USDZ lets you show a model in augmented reality straight from Safari, Mail or Messages.
What changes in the conversion
- Geometry is preserved. Every triangle, with all object transforms applied, ends up in the new file.
OBJ vs USDZ
| OBJ | USDZ | |
|---|---|---|
| Full name | Wavefront OBJ | Universal Scene Description (zipped) |
| Stores | geometry, normals and UV coordinates (materials live in a separate .mtl file) | geometry, PBR materials and textures |
| Colour | No | Yes |
| Textures | Yes | Yes |
| Units | none | stored in the file |
| Exact CAD geometry | No | No |
About the formats
OBJ (Wavefront OBJ) was introduced by Wavefront Technologies for its Advanced Visualizer software. It is a plain-text mesh format that stores vertices, faces, normals and texture coordinates, with materials in a separate MTL file. It is widely used to move models between 3D modelling programs such as Blender, Maya, 3ds Max and ZBrush.
USDZ (Universal Scene Description (zipped)) was based on Pixar's Universal Scene Description and adopted by Apple for AR Quick Look. It is an uncompressed zip package with a USD scene and its textures. It is the format iPhone and iPad use to show 3D models in augmented reality straight from Safari and Messages.
Frequently asked questions
Is this converter free?
Yes. You can convert OBJ to USDZ for free – up to 3 conversions a day, with no sign-up and no watermark. If you need more, Pro gives you unlimited conversions and batch conversion (free for 7 days).
Are my files uploaded to a server?
No. The conversion runs entirely in your browser using WebAssembly and JavaScript. Your model never leaves your computer, which also makes it safe for confidential parts and patient data.
Is there a file size limit?
There is no fixed limit. Files of a few hundred megabytes work on a typical laptop; the practical limit is your device's memory.