Free 3D File Converter
OBJ to glTF Converter
Drag in a .obj file, see it in 3D, and download a clean .gltf in seconds — right in your browser. No upload, no sign-up. OBJ files up to 100 MB are supported; MTL files and texture sidecars are not loaded.
Your download is ready. Keep working with the converted file:
- ✓ 100% free
- ✓ Private — nothing uploaded
- ✓ Instant, in-browser
- ✓ No sign-up
No 3D file handy? Try a classic model
Click any model to load it into the converter above and convert it instantly.
Sample models from the public common-3d-test-models repository.
.obj in Modeling, rendering, games .gltf out Web, AR & real-time How to convert OBJ to glTF
Drop your .obj file into the box above, click to browse, or pick a classic sample model. It loads instantly — nothing is uploaded.
Your model renders in an interactive 3D viewer. Drag to rotate and confirm it is the right mesh.
Click Convert to glTF and download your .gltf file — ready for Blender and any glTF app.
OBJ vs glTF: what's the difference?
| Feature | OBJ | glTF |
|---|---|---|
| Geometry (mesh) | Loaded | Written |
| Normals | When present | Written |
| UV coordinates | When present | Written |
| Materials | MTL not loaded | No original MTL data |
| Texture images | Not loaded | Not included |
| Animation / rigging | Not stored | Not created |
| Scene groups | OBJ objects/groups | Exported mesh scene |
| Limit / download | 100 MB input | One .gltf file |
What is the OBJ format?
OBJ is one of the most widely supported 3D formats in existence. Beyond geometry it can reference materials through a companion .mtl file and store UV coordinates for textures, which makes it a go-to format for modeling, rendering and game engines.
What is the glTF format?
glTF is the modern, web-native standard for 3D — often called “the JPEG of 3D”. The .gltf variant is JSON-based and carries full PBR materials, textures, UVs, scene hierarchy and even animation, making it ideal for the web, AR and real-time engines.
Why convert OBJ to glTF?
Wavefront OBJ (.obj): OBJ is one of the most widely supported 3D formats in existence. Beyond geometry it can reference materials through a companion .mtl file and store UV coordinates for textures, which makes it a go-to format for modeling, rendering and game engines.
Use this route when a web or real-time pipeline needs glTF geometry. This page reads the .obj file itself; it does not load a companion .mtl file or texture images, so original materials cannot be carried into the result. Normals and UV coordinates present in the OBJ are exported to glTF.
This converter does the translation locally, in your browser: your file is read into a real 3D engine, shown so you can confirm it, then re-exported as a standards-compliant glTF — no server, no account, no upload queue.
When to convert OBJ to glTF
Web-ready geometry
Move an OBJ mesh into a glTF-based web or real-time workflow without uploading the source file to a server.
Normals and UV handoff
Carry the normals and UV coordinates present in the OBJ into glTF before reconnecting materials in your 3D application.
Local format conversion
Create a glTF mesh on this device when a destination does not accept OBJ. Companion MTL and texture files are not read.
Static model pipelines
Use the result as a geometry starting point for three.js, Blender and other glTF tools; review scale, orientation and materials after import.
Open the glTF output
The glTF geometry can be opened in these tools. Review scale, orientation and materials after import:
- Blender
- three.js
- Babylon.js
- Unity
- Unreal
- Godot
Tips for the best OBJ → glTF results
- • Repair scans first. If your OBJ came from a 3D scanner, run a quick mesh repair (Blender or MeshLab) to close holes before converting.
- • Expect a size change. glTF is medium (json + assets), so the output size may differ from your OBJ — that's normal.
- • Check scale & orientation. Different tools assume different units. After importing the glTF, confirm the model's size and up-axis match your scene.
- • Keep the original. Conversion is one-way here, so hold on to your source OBJ in case you need to re-export with different settings.
- • OBJ sidecars are not read. If the source depends on a .mtl file or texture images, reconnect those assets in your 3D application after conversion.
Frequently asked questions
Is this OBJ to glTF converter free?
Yes — completely free, no sign-up and no watermark. The conversion runs locally in your browser, so your file never leaves your computer and there is no upload wait. The optional 3D preview uses WebGL when available, but conversion does not depend on it.
Does converting OBJ to glTF lose quality?
The exported glTF keeps the geometry, normals and UV coordinates available in the OBJ. This converter reads only the .obj file, so companion MTL materials and texture images are not loaded and cannot be preserved.
What is the largest OBJ file I can convert?
This route accepts OBJ files up to 100 MB. Conversion runs locally, so a dense model below that limit can still exceed the memory available on a phone or older computer. Simplify very large assets in a desktop 3D application first.
Where can I use the converted glTF file?
glTF is web, ar & real-time. The exported file imports cleanly into Blender, three.js, Babylon.js, Unity and other glTF-compatible tools.
Is it safe to convert private or proprietary models?
Yes. Nothing is uploaded — the file is read and converted on your own device, then the glTF is generated locally for download. Your model stays private.