Free online ABC to USDZ converter

Source format: ABC

ABC usually refers to the Alembic file format, a widely used 3D animation cache format. It is common in visual effects, animation, and game production because it stores baked geometry, transforms, and animation data efficiently. Studios and artists use ABC files to move complex animated scenes between tools such as Maya, Houdini, Blender, Cinema 4D, and other DCC applications. ABC is especially useful for static or animated meshes, camera data, and scene caches where the goal is reliable playback rather than editable modeling.

Target format: USDZ

USDZ is a packaged 3D scene format based on Pixar’s USD ecosystem. It is designed for easy sharing and viewing of 3D content, especially in Apple workflows such as AR Quick Look on iPhone and iPad. A USDZ file bundles the scene and its assets into a single uncompressed package, which makes it convenient for distribution and preview. Its main advantages are portable packaging, strong support in modern 3D pipelines, and compatibility with AR-focused viewing on Apple devices.

How to perform the conversion

The best conversion method depends on whether your ABC file contains only geometry and animation or also materials, textures, and scene hierarchy. For many users, the simplest route is to use a desktop 3D application that can import Alembic and export USD/USDZ.

Option 1: Blender

1. Open Blender and import the Alembic file with File → Import → Alembic (.abc).
2. Check the imported animation, scale, and orientation.
3. If needed, adjust materials and textures so they are compatible with USDZ export.
4. Export using File → Export → Universal Scene Description (.usd/.usda/.usdc/.usdz) if your Blender version supports USDZ directly.
5. Save the result as output.usdz.

Option 2: Apple Reality Converter or Reality Composer Pro

1. Import the Alembic content into a compatible 3D tool first, or convert it to USD in a pipeline tool if direct ABC import is not available.
2. Open the USD scene in Reality Converter or Reality Composer Pro.
3. Review materials, textures, and animation playback.
4. Export or package as .usdz.

Option 3: Pipeline conversion with USD tools

If you work in a production pipeline, convert ABC to USD first, then package to USDZ. This is often done with studio tools or scripts that support Alembic-to-USD translation. After that, use a USD packaging tool to create the final .usdz file.

You can also convert the file on 101convert.com for free, without installing any software, if the built-in converter supports your specific ABC file.

Notes on quality, compatibility, or limitations

ABC to USDZ is not always a perfect one-to-one conversion. Alembic is excellent for baked animation and geometry caches, but USDZ has stricter expectations for packaging and viewer compatibility. Keep these points in mind:

• Materials may not transfer exactly, especially if the source uses complex shaders not supported by USDZ viewers.
• Textures must be embedded or correctly referenced for the package to work reliably on Apple devices.
• Animation support depends on how the Alembic cache was authored and how the USDZ exporter interprets it.
• Scale and orientation often need adjustment because 3D tools may use different unit systems and axis conventions.
• USDZ is best for distribution and viewing, not for deep editing; keep the original ABC file if you need to revise the animation later.

If your goal is AR preview on iPhone or iPad, test the exported USDZ in Quick Look before final delivery to confirm that geometry, textures, and animation display correctly.