GLB to STL Converter for 3D Printing

GLB is the format most AI 3D generators and web viewers export. Slicers like Cura, PrusaSlicer and Bambu Studio want STL. This converter merges every mesh in the GLB into one STL and rotates it from glTF's Y-up axis to the Z-up axis slicers expect, so the model stands upright on the build plate.

Why convert GLB to STL?

• Print models from AI 3D generators (Meshy, Tripo, Hunyuan3D, ComfyUI workflows)
• Take assets from Sketchfab or game engines to a 3D printer
• Get a single mesh file that every slicer opens

What to know

• STL stores geometry only, so textures and colors are dropped.
• AI-generated meshes are often not watertight. The preview flags this; turn on Repair to close the holes before slicing.
• For AI models, the one-step print page also scales the model to a real size and gives it a flat base.
• Large, high-poly GLBs over 20MB need the 24-hour pass or Pro.

How to convert GLB to STL

1. Select your .glb file above.
2. Click "Convert to STL".
3. The .stl file downloads automatically with the same name as your original.