Fast 3D

Free FBX to STL Converter

Lightning-fast FBX to STL conversion — 100% in your browser. Your files never leave your device. Free, no watermark, no sign-up.

Upload 3D Model

Drag and drop or click to upload. Files are processed locally in your browser.

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Supports GLB, GLTF, OBJ, STL, FBX, PLY

GLBGLTFOBJSTLFBXPLY

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Fast3D AI

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Skip the search — generate a model from text or an image, then convert it to FBX or any other format in one workflow.

Generate → convert — all on fast3d.org.

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FBX vs STL

See what transfers when converting between these two formats.

Converting FBX to STL will lose: Textures, Materials, Animation, Rigging.

FeatureFBXSTL
Geometry
Textures
Materials
Animation
Rigging

Other conversions from FBX

GLB

FBX → GLB

Binary glTF, the most common modern 3D format

GLTF

FBX → GLTF

JSON-based glTF, human-readable

OBJ

FBX → OBJ

Wavefront OBJ, widely supported geometry format

PLY

FBX → PLY

Polygon File Format, common in 3D scanning

Other conversions to STL

GLB

GLB → STL

Binary glTF, the most common modern 3D format

GLTF

GLTF → STL

JSON-based glTF, human-readable

OBJ

OBJ → STL

Wavefront OBJ, widely supported geometry format

PLY

PLY → STL

Polygon File Format, common in 3D scanning

FBX → STL

Frequently Asked Questions