3D converter · free · in your browser
Convert OBJ to STL
Convert your OBJ files to STL right in your browser — free, no sign-up. A mesh format widely supported by 3D and design software (Blender, ZBrush). The universal 3D-printing mesh format; geometry only, read by every slicer (Cura, PrusaSlicer, Orca). It's a geometry conversion (the mesh is preserved); colour, materials and print settings are dropped.
Your file is processed in your browser. It is never uploaded to any server.
How to convert OBJ to STL
- 1Drag in or pick your OBJ file.
- 2Check it in the 3D preview (rotate it and see its dimensions).
- 3Hit "Convert & download" to get your STL.
What is OBJ?
a mesh format widely supported by 3D and design software (Blender, ZBrush).
What is STL?
the universal 3D-printing mesh format; geometry only, read by every slicer (Cura, PrusaSlicer, Orca).
FAQ
- Is my file uploaded to a server?
- No. Everything happens in your browser, on your own device. The file is never sent anywhere, so it's private and fast.
- Does converting OBJ to STL lose quality?
- Not in geometry: the mesh (vertices and triangles) is preserved exactly. What's dropped is whatever the target format can't hold, such as colour, materials or slicer settings.
- Is it free with no limits?
- Yes, free and no sign-up. Because the conversion is local, there are no server limits — it only depends on your own computer.