USDZ vs FBX
USDZ is Apple's packaging of Pixar's Universal Scene Description, used for AR Quick Look on iPhone and iPad and increasingly across film and visualisation pipelines. FBX is Autodesk's interchange format for games and animation. Use USDZ when the model is going to Apple devices or USD-based pipelines, and FBX when it's going into Unity, Unreal or Autodesk tools.
Side by side
| USDZ | FBX | |
|---|---|---|
| Full name | Universal Scene Description, zipped | Autodesk Filmbox |
| Created by | Pixar's USD, packaged by Apple and Pixar | Kaydara, now Autodesk |
| Introduced | 2018 | 1996 (as Filmbox) |
| Encoding | uncompressed ZIP of USD files and textures | proprietary binary or ASCII |
| File size | medium | medium; can embed textures |
| Materials | Yes | Yes |
| Textures | Yes | Yes |
| Animation | Yes | Yes |
| Colour | PBR materials and embedded textures | materials and textures (often referenced externally) |
| Units | metres in our export | usually centimetres |
| Best for | iPhone and iPad AR Quick Look and Apple Vision Pro | Maya, 3ds Max, Unity and Unreal pipelines |
Choose USDZ when
- •You're publishing AR content for iPhone and iPad.
- •Your pipeline is built on USD.
- •You want a single packaged file with textures for Apple tools.
Choose FBX when
- •You're importing into Unity, Unreal, Maya or 3ds Max.
- •You're exchanging rigged, animated characters.
- •A client or marketplace requires FBX.
Which apps open them
Of the 15 3D apps in our software guides, 4 open USDZ without conversion and 10 open FBX. Only FBX opens directly in Unity, Godot, 3ds Max, Roblox Studio, PowerPoint, Sketchfab.
Questions
- Is USDZ better than FBX?
- Neither is better everywhere. You're publishing AR content for iPhone and iPad: choose USDZ. You're importing into Unity, Unreal, Maya or 3ds Max: choose FBX.
- Can I convert USDZ to FBX?
- We convert FBX to USDZ, but not the other way yet. Export FBX from the app that made the USDZ file instead.
- Which file is smaller, USDZ or FBX?
- USDZ: medium. FBX: medium; can embed textures. Actual size depends mostly on polygon count and texture resolution.
Written with AI assistance by the Renderlyst team in October 2026. Format support reflects each app's current release as we understand it, and we link the official documentation so you can confirm it for your version. Spotted something out of date? Email alishbakhalid766@gmail.com.