Move OBJ Models into the Modern glTF Ecosystem
Convert Wavefront OBJ files to GLTF and gain access to the full glTF toolchain. GLTF is the web-native standard supported by Three.js, Babylon.js, model-viewer, and every major AR and game engine runtime.
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Convert OBJ to GLTF
Upload a OBJ file and download the converted GLTF — all processing happens on the server.
Drop your OBJ file here
or click to browse
Accepts .obj files
MTL Colors Mapped to PBR Materials
OBJ models reference diffuse, specular, and ambient colors in companion MTL files. The converter reads the MTL and maps these values to GLTF PBR material properties, giving the output a physically-based starting point for web rendering.
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Human-Readable JSON Output
Unlike the binary GLB container, GLTF stores scene data as plain JSON that you can open, inspect, and edit in any text editor. This makes it ideal for developer pipelines, validation workflows, and custom tooling.
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Entry Point to the glTF Toolchain
Once in GLTF format, use glTF-Transform to optimize and compress, the Khronos glTF Validator to verify correctness, Draco or Meshopt for geometry compression, and any glTF-compatible renderer for immediate preview.
Convert NowHow to Convert OBJ to GLTF
Upload Your OBJ File
Drag and drop an OBJ file into the upload zone or click to browse. Files up to 100 MB are supported.
Sign In and Convert
Sign in to start the conversion. The server reads the OBJ geometry and any associated MTL colors, then writes them into a GLTF JSON document.
Download the GLTF
Once ready, click Download. The GLTF and its BIN buffer are packaged for immediate use in your web, engine, or pipeline workflow.
Deep Dive
OBJ and GLTF: Legacy Geometry vs. Modern Delivery
Why Use It
No Software to Install
The conversion runs on the server. No Blender scripts, no obj2gltf CLI, no local Node.js setup required.
MTL Colors to PBR
Diffuse and ambient colors from the MTL companion file are mapped to GLTF PBR base color values for physically-based rendering in any compliant viewer.
glTF Toolchain Ready
The output is a valid GLTF 2.0 file ready for glTF-Transform, Draco compression, Khronos Validator, and any tool built on the glTF specification.
Web and AR Deployable
GLTF loads natively in Three.js, Babylon.js, model-viewer, Cesium, WebXR, and every major AR publishing platform without plugins or format workarounds.
Who Uses It
Who Converts OBJ to GLTF
Frequently Asked Questions
Does the GLTF output include materials from my MTL file?
Yes. The converter reads the MTL file referenced in the OBJ and maps diffuse, ambient, and specular color values to GLTF PBR material properties.
What is the difference between GLTF and GLB output?
GLTF stores scene JSON and binary geometry in separate files, making it easier to read and modify. GLB packs everything into one binary for simpler deployment. Both are valid glTF 2.0.
Can I use the GLTF in Three.js?
Yes. Three.js GLTFLoader supports GLTF directly. Ensure the associated BIN file is accessible at the relative path referenced in the GLTF JSON.
Are multi-object OBJ files supported?
Yes. Each named object or group in the OBJ is written as a separate mesh node in the GLTF scene graph, preserving the object structure.
What is the maximum OBJ file size?
The converter supports OBJ files up to 100 MB. Large OBJ files produce correspondingly large GLTF and BIN outputs.
Convert Your OBJ to GLTF Now
Upload your OBJ and get a modern GLTF in seconds. No install, no manual steps.