What are the 3D Formats Supported by Unity?
Standard File Formats
Unity supports the following standard 3D file formats:
- FBX (.fbx)
- Collada (.dae)
- DXF (Drawing Interchange Format) (.dxf)
- Wavefront OBJ (.obj)
What is the Recommended 3D File Format for Unity?
The best format recommended by LangitWorkers and Unity themselves is the FBX format. Unity internally processes all 3D models as FBX, meaning that importing other formats results in automatic conversion to FBX. To avoid unnecessary steps, it’s best to use FBX from the start.
Benefits of Using FBX Format:
- Carries animations
- Supports bones
- Retains materials
- Preserves UV sets
- Includes blend shapes support
Where to Find FBX 3D Models?
1. Unity Asset Store
The Unity Asset Store is the best place to find high-quality 3D models and animations made by professionals. It offers:
- A vast collection of game-ready assets
- Pre-rigged and animated models
- Optimized assets for better performance
- Community reviews and updates
2. Create One Using AI
Tools like Meshy.ai can generate 3D models, textures, and animations from text prompts or images. This AI-powered platform simplifies asset creation, producing game-ready models compatible with Unity.
3. 3D Model Seller Websites
Websites like CGTrader and TurboSquid offer a large collection of Unity-ready 3D models:
- CGTrader – Professionally crafted models for various industries.
- TurboSquid – High-quality 3D assets, often used for professional work.
4. Hire a 3D Modeler
If you need a custom 3D model, hiring a professional is the best option. Platforms like Upwork, Fiverr, or ArtStation have skilled 3D artists specializing in Unity game assets. When hiring, provide:
- Reference images
- Polycount limits
- Texture and material requirements
- Animation and rigging needs
Tip: Always request the final model in FBX format for easy Unity integration.
How to Use a Non-Compatible 3D Model in Unity?
If you have a model in an unsupported format, you must convert it before using it in Unity.
1. Convert the Model to a Unity-Compatible Format
Option 1: Use the Original Software
If you have access to the original 3D modeling software (e.g., 3ds Max, Blender, Cinema 4D, or SketchUp), open the model and export it as:
- FBX (.fbx) – Recommended
- OBJ (.obj)
Option 2: Use Blender (Free & Open-Source)
- Open Blender.
- Go to File > Import, then check if Blender supports your file format.
- If successful, go to File > Export > FBX.
Option 3: Use an Online Converter
If you can’t open the model in any software, try these online conversion tools:
- CAD Exchanger – Great for CAD formats.
- ConvertCADFiles – Handles multiple 3D file types.
- AnyConv – A simple and free conversion tool.
2. Clean Up the Model (Recommended Steps)
After conversion, follow these steps to ensure smooth integration:
- Check Scale & Rotation – Some formats import with incorrect scaling.
- Apply Transforms – In Blender, press Ctrl + A > Apply All Transforms.
- Check Materials & Textures – Ensure textures are correctly linked before exporting.
3. Import into Unity
- Drag the converted model into Unity’s Assets folder.
- Adjust its import settings for best performance.
- Assign materials and apply animations as needed.
Conclusion
Understanding Unity’s 3D file format compatibility is essential for a smooth workflow. FBX remains the best format for importing 3D models into Unity due to its efficiency and feature support. Whether you’re sourcing models from the Asset Store, AI tools, seller websites, or hiring a professional, knowing how to handle 3D formats will ensure your projects run smoothly.
