Free OBJ to STL Converter
Convert OBJ to binary STL free in your browser. Preview the mesh, preserve its coordinates or rescale, and download without an account.
How to convert
- Choose your OBJ file.
- Check the preview, coordinate scale and orientation. Keep source numbers unless you intend to change units.
- Download STL.
What the export keeps
Select the OBJ alone for geometry conversion. Materials and textures are not needed for STL. Source coordinates and orientation are preserved by default; you can rescale or change the up axis before downloading.
STL contains geometry only, with no materials, textures or colors.
Conversion does not guarantee a watertight or print-ready mesh. Check dimensions, holes, wall thickness and supports in your slicer.
Common questions
Will conversion change the size or orientation?
By default, these conversions keep the source numeric coordinates and orientation. Use the explicit unit and axis controls when needed. OBJ and STL have no reliable unit tag; confirm dimensions after importing.
Is conversion free?
Local files stay in your browser. Export them freely without an account. AI-generated models, server rigging and AI motions retain their existing allowance and plan requirements.
Free OBJ to STL Converter · Free FBX to OBJ Converter · Free STL to OBJ Converter