フォーマットガイド
The rendering community mesh format — UV mapping, multi-material groups, and near-universal software support.
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| Extension | .obj (+ .mtl for materials) |
|---|---|
| Full name | Wavefront Object |
| Geometry type | Polygon mesh (triangles, quads, n-gons) |
| Open standard | Yes |
| Supports color | Via MTL material file |
| Supports UV mapping | Yes |
| Supports assemblies | No (groups only) |
| Encoding | ASCII text |
OBJ (Wavefront Object) is a simple ASCII format that stores polygon meshes with vertex positions, UV coordinates and normals. Materials are stored in a companion .MTL file. OBJ is one of the most universally supported interchange formats across rendering, game development and visualization.
OBJ is the standard input for offline renderers (Blender Cycles, V-Ray, Arnold) and real-time visualization tools.
Unity, Unreal Engine and Godot all import OBJ. For static props without animation, OBJ is a clean alternative to FBX.
Photogrammetry software exports to OBJ because the format preserves UV maps for baked texture maps.
Blender, Maya, 3ds Max, Cinema 4D, ZBrush, Houdini, Unity, Unreal Engine, SolidWorks, Fusion 360 and virtually all 3D tools.
Commonly converted from STEP or IGES (for visualization), to FBX (for animation rigs), to glTF/GLB (for web and AR), or to STL (for 3D printing).