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GLBKit

FBX to STL Converter

Convert an Autodesk FBX to binary STL for 3D printing. Materials, textures and animation are dropped. Runs in your browser.

Drag & drop your FBX file here

or click to browse

Supported Formats

.glb.gltf.obj.fbx.stl.ply.3mf.off.zip

Format Information

Source Format

FBX.fbx

FBX (Filmbox Scene)

FBX is Autodesk's scene format, written by Maya, 3ds Max and MotionBuilder. It is a compact container for a whole DCC scene, which is why it is the usual hand-off format when a model comes back from a modelling or animation package.

What it carries: Meshes, UVs, vertex colours, materials with embedded texture maps, a bone hierarchy, skinning, and keyframe animation clips. Blend shapes and Autodesk-specific property types are not read by this converter.

Open a FBX file in the viewer

Target Format

STL.stl

STL (Stereolithography)

STL is an additive-manufacturing format from the 1990s: a flat list of triangles and nothing else. It has no concept of a scene, a material or a texture, which is why it is the lingua franca of 3D printing and also its most lossy interchange format.

What it carries: Triangle positions and, optionally, one facet normal per triangle. No UVs, no vertex colours, no materials, no node hierarchy, no animation.

Open a STL file in the viewer

About this conversion

Shape only. The FBX scene is triangulated and written as a binary STL for printing or mesh processing, with the entire material, texture and animation layer left behind.

Why convert FBX to STL

  • Send an FBX model to a slicer for 3D printing.
  • Run the geometry through a mesh-repair or analysis tool that only reads STL.
  • Produce a compact shape file for sharing with someone who has no DCC software.

What happens during the conversion

Geometry

Every mesh in the scene is triangulated and written as a binary STL with one facet normal per triangle. Node transforms are baked into the positions and the meshes are merged into a single coordinate space.

Materials and textures

None. STL has no material, texture, UV or colour field, so a fully textured FBX arrives as an untextured shape.

Animation

FBX animation, skinning and morph targets cannot be stored in STL, so only the static geometry of the scene is written.

Common use cases

  • Preparing a printable model from a DCC scene.
  • Running mesh repair or analysis in an STL-only tool.
  • Sharing a shape-only copy of a complex scene.

Limitations of this conversion

  • All materials, textures and UVs are lost — this is inherent to STL.
  • Every mesh in the scene is written, hidden or not, because STL is a flat triangle list with no notion of a hidden object.
  • There is no unit metadata, so confirm the scale in your slicer.

How to convert FBX to STL

Three steps in the browser. Nothing is uploaded to a server, so an unwieldy file is limited only by your own device's memory.

1
STEP 1

Upload your .fbx

A single file is enough; the textures are embedded and will not be carried over anyway.

2
STEP 2

Convert to STL

The scene geometry is triangulated and written as a binary STL with computed normals.

3
STEP 3

Check the scale in your slicer

STL has no unit field, so check the model's size in the slicer before sending it to a printer.

Related tools and formats

Frequently Asked Questions

Questions people ask when turning FBX files into STL.

Looking for a different direction? See every supported conversion.