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  • Language
    • 🇸🇮 SlovenianUtility
    • 🇬🇧 EnglishUtility
    • 🇫🇷 FrançaisUtility
  • Tools
    • AI Modeling
      • CAD AIPrecise parts from a sentence
      • Organic AISculpted multi-color figurines
      • Image to 3DPhoto or sketch to model
      • CAD for 3D PrintingExact millimetres, no CAD
      • Game AssetsTextured, rigged and animated
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      • Reduce File Size
      • Scale / Resize
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      • Mirror / Flip
      • Print Orientation
      • Measure Dimensions
      • Print Weight & Cost
    • Calculators
      • Filament Length / Weight
      • Material Shrinkage
      • Tolerance & Fit
      • Stepper Motor VREF
      • Volumetric Flow
      • E-Steps
      • Thread & Tap Sizes
      • All calculators…
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FBX to STL converter

Drop a FBX file, check the preview, download STL. The conversion runs in your browser, so your model never leaves your device.

Convert the attached FBX file to STL

Files are processed entirely in your browser. Nothing is uploaded to a server.

Any 3D edit is just a prompt away.

Need a part that doesn't exist yet?

The GrandpaCAD chat designs it from a description, like "Model a snap-fit clip that holds a phone charging cable on a desk edge up to 25 mm thick."

How the conversion works

FBX is Autodesk's interchange format for meshes, materials, rigs, and animation. Maya, 3ds Max, Blender, Unity, and Unreal all read and write it, which makes it common for models that started life as game or film assets.

The converter writes binary STL, which is what slicers expect. Drop the result straight into Bambu Studio, PrusaSlicer, Cura, or any other slicer.

FBX records its own unit setting, and the converter reads it so the model comes out at its real size whatever units it was authored in. If your model still lands at the wrong scale, the source FBX declared the wrong units, and the scale tool will fix it in one step.

Frequently asked questions

Does my file get uploaded?
No. Parsing and export run in your browser with WebAssembly and three.js. The file stays on your device, and it works offline once the page has loaded.
What survives the FBX to STL conversion?
The mesh comes through in full, scaled to millimeters. Everything else FBX carries — materials, textures, skeletons, skinning weights, and animation takes — is dropped, because STL has nowhere to put it.
Is there a file size limit?
Models up to 8 million triangles work. STL files can be any size below that; other formats stop at 300 MB. Heavier meshes take longer rather than failing outright; if a file is unwieldy, reduce its triangle count first with the reduce tool.

More FBX conversions

FBX → OBJFBX → GLBAll converters

More free 3D file tools

View a modelRepair a modelReduce file sizeConvert 3D filesMeasure a modelScale a modelSplit a modelMirror a modelPrint orientationPrint weight & cost

Describe a part. Get a printable model.

GrandpaCAD turns a text prompt into a ready-to-print 3D model. Functional parts, organic shapes, multi-color prints. No CAD skills needed.

"Model a snap-fit clip that holds a phone charging cable on a desk edge up to 25 mm thick."

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