How do I convert a GLB file to FBX?

Drop the .glb into the converter above; the binary .fbx downloads in seconds. The conversion runs locally in your browser through a WebAssembly build of the assimp library - no account, no upload, no software install.

Will the FBX open in Unity and Unreal Engine?

Yes - the output is standard binary FBX and imports into Unity, Unreal, Maya, 3ds Max, and Blender. Static geometry with UVs is the reliable path; if your engine reports a scale mismatch, set the import scale factor (GLB counts meters, FBX tools often assume centimeters).

Do my textures carry over?

Not reliably - FBX handles textures very differently from glTF, and the writer may not embed them. The UVs are preserved, so reassigning the texture images in your engine or DCC tool takes a minute. For fully-textured transfer, check whether your target accepts GLB directly.

What about animations and rigs in my GLB?

They are not carried - this conversion produces static geometry in rest pose. Proper rigged FBX needs a DCC tool: import the GLB into Blender and export FBX from there, which handles skeleton conversion correctly.

Is my file uploaded to a server?

No - the whole pipeline, including the FBX writing, runs in your browser. Unreleased game assets never touch a server.

I generated a model with AI - how do I get it into my game engine?

AI generators output GLB. If your engine reads GLB (Unreal 5+, Godot, Unity with glTFast), import it directly. If your pipeline demands FBX, convert here first - and consider a remesh pass before converting if the AI topology is dense.

Convert GLB to FBX - Free Online Converter

Drop a .glb file below and download it as .fbx in seconds. The conversion runs entirely in your browser - no upload, no signup, no watermark. The output is a binary FBX that imports into Unity, Unreal Engine, Maya, and 3ds Max.

Updated July 2026

Done in seconds

Your GLB converts to FBX locally in your browser - no upload queue, no waiting.

Private by design

Your file never leaves your device. Nothing is uploaded, nothing is stored.

Free, no strings

No signup, no watermark, no file limit - convert as many files as you need.

How to convert glb to fbx

Drop your GLB file

Drag the .glb file into the converter above or click to browse. No account and no upload - the file stays on your device.

Conversion runs in your browser

The model is parsed and rewritten locally, in seconds for typical files. Geometry is carried over 1:1 - no remeshing, no quality loss.

Download the FBX

The .fbx download starts from the same spot. Convert as many files as you like - there is no limit or watermark.

GLB and FBX, explained

.glb

What is GLB?

GLB is the binary form of glTF, often called "the JPEG of 3D". One file packs the full scene: meshes, PBR materials, embedded textures, animations, and a real unit scale (meters). It is the standard for 3D on the web and the default output of most AI 3D generators.

Because everything is embedded in a single binary file, GLB transfers cleanly between tools with nothing lost in transit. glTF/GLB is an open Khronos standard, loads fast, and is supported by every modern engine, DCC tool, and web viewer.

Developed by: Khronos Group (2015)
Structure: Single binary file: JSON scene + buffers + textures
Used by: Web viewers, Three.js, Unity, Unreal, AR apps, e-commerce platforms

.fbx

What is FBX?

FBX is Autodesk's proprietary scene format and the long-standing standard for moving rigged, animated characters between DCC tools and game engines. Skeletons, skinning, blend shapes, and animation clips all travel inside one file.

Because the format is closed, no official browser tooling exists - this fleet writes FBX through assimp's open-source FBX writer running as WebAssembly, right in your browser. Static geometry with UVs is the reliable path; rigs and animation clips need a DCC-tool export.

Developed by: Autodesk (proprietary) (2006 (Autodesk era))
Structure: Proprietary binary scene container
Used by: Unity, Unreal Engine, Maya, 3ds Max, MotionBuilder

What survives the glb to fbx conversion

Format conversion is honest work: some data has nowhere to go in the target format. Here is exactly what carries over.

Mesh geometry

Every mesh carries over exactly, with scene transforms baked in - verified by round-tripping the output through independent FBX parsers.

UV coordinates & normals

Texture coordinates and normals survive, so materials assigned in your engine or DCC tool map correctly.

Materials & textures

Basic material data is written; embedded textures may not survive the FBX writer. Reapply materials in the target tool - the preserved UVs make that clean.

Model scale

Coordinates copy 1:1. GLB uses meters while FBX consumers commonly assume centimeters - check the import scale in your engine (most have a scale factor field).

Animations & rigs

This is a static-geometry conversion. For rigged, animated FBX, export from Blender or your DCC tool.

When should you convert GLB to FBX?

Convert to FBX when a pipeline insists on it: older Unity/Unreal workflows, Maya and 3ds Max imports, asset-store submission requirements, and countless studio toolchains are FBX-first. AI generators and web tools hand you GLB - this is the bridge.

If your engine accepts GLB (Unity via glTFast, Unreal 5+, Godot natively), skip the conversion - GLB carries more (PBR materials, animations) with less friction. Convert only when FBX is genuinely required.

Still weighing the formats themselves? See the full GLB vs FBX comparison - structure, materials, file size, and which wins for each use case.

And if what you actually need is a new model rather than a new file format: 3D AI Studio's main tool can generate 3D models from photos with AI - with exports to every format on this page.

GLB to FBX - frequently asked questions

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