An FBX file is a 3D file format developed by Autodesk. It is used to store 3D models and animations, making it popular among 3D artists and game developers. FBX files can contain information about geometry, materials, textures, skeletal animations, and more. This makes it a versatile format for transferring 3D data between different software applications.

FBX files are commonly used in the fields of architecture, engineering, and construction (AEC), as well as in the entertainment industry for creating 3D assets for games, movies, and virtual reality experiences.

One of the key features of FBX files is their compatibility with various 3D software applications. They can be imported and exported by popular programs like Autodesk Maya, 3ds Max, Blender, Cinema 4D, and Unity. This interoperability allows artists to work with different tools and collaborate on projects with ease.

Another important aspect of FBX files is their support for animation data. In addition to storing static 3D models, FBX files can also contain keyframe animations, skeletal animations, and constraints. This makes them a valuable asset for animators and game developers who need to work with complex character animations and rigging.

To work with FBX files, Autodesk provides a free FBX Converter utility, which allows users to convert FBX files to and from different versions of the FBX format. This can be useful when working with older or newer versions of 3D software that may have compatibility issues with certain FBX file revisions.

In conclusion, an FBX file is a versatile and widely used 3D file format that serves as a standard for storing 3D models and animations. Its compatibility with various software applications and support for animation data make it an essential tool for 3D artists and developers. Understanding the FBX file format is crucial for anyone working in the field of 3D modeling and animation.