Convert Wavefront OBJ files to STL for 3D printing slicers (Cura, PrusaSlicer, Bambu Studio). Browser-based, zero upload, free.
Upload your OBJ file
OBJLoader parses the mesh, then we emit binary STL bytes
Download the STL — drop it straight into your 3D printer slicer
0 bytes uploaded. OBJ to STL Converter runs entirely in your browser using three.js and WebGL. Your meshes never leave your device.
Yes. We emit standards-compliant binary STL with the 80-byte header followed by 50-byte triangle records.
STL has no concept of materials or vertex groups. All geometry is merged into a single triangle soup. If you need materials, convert to GLB instead.
Binary — it's ~5× smaller. Use the ASCII variant only when you specifically need a human-readable file (debugging or version control).
Convert STL meshes to Wavefront OBJ in your browser. Open the result in Blender, Maya, Cinema 4D, or any 3D tool. Privacy-first — zero upload.
Open toolConvert STL files to GLB (binary glTF) directly in your browser. Smaller, faster, and AR-ready. Zero upload — your meshes never leave your device.
Open toolConvert ASCII STL files to compact binary STL — typically 5× smaller. Faster to load, cheaper to store. 100% browser-based, no upload.
Open tool