PLY to STL Converter — Free, Browser-Side, No Upload
PLY → STL
Convert PLY mesh files to STL format in your browser for 3D printing. No upload required. Point cloud PLY files are not supported.
Best for
- Converting scanned mesh PLY files into slicer-friendly STL geometry
- Preparing mesh-based PLY exports for basic 3D printing checks
- Dropping vertex color data when printable geometry is the only requirement
- Keeping scan-derived files local during conversion
Before you start
- Make sure the PLY contains faces; point clouds without mesh connectivity cannot become STL here
- Expect vertex colors and texture references to be removed in the STL output
- Confirm scale in your slicer because STL does not store units
- Repair or remesh scan data first if the source has holes or non-manifold geometry
Known Limitations
- Texture references are not preserved — PLY to STL conversion loses any texture coordinate data
- Point cloud PLY files (no face data) cannot be converted and will be rejected with a notice — only mesh PLY files are supported
- STL output has no units — confirm scale in your slicer
Helpful guides
Frequently Asked Questions
Can I convert a PLY point cloud to STL?
No. This tool requires a PLY file with face (polygon) data. Point cloud PLY files — which store only vertex positions with no connectivity — cannot be converted and will be rejected with an error notice.
Will vertex colors from the PLY file appear in the STL output?
No. STL stores geometry only — it has no color, texture, or material fields. Any per-vertex color data in the PLY file is dropped during conversion.
Does this support both ASCII and binary PLY files?
Yes. The Three.js PLYLoader handles both ASCII and binary (little-endian and big-endian) PLY formats automatically.
Will the scale be correct after converting PLY to STL?
The converter preserves raw coordinate values. STL has no unit metadata, so confirm scale in your slicer (PrusaSlicer, Cura, etc.) after importing.
Related tools
How it works
Your files are processed entirely inside your browser using Three.js. Your files never leave your browser — there is no server upload, no cloud storage, and no third-party processing. The converted file is generated as a local Blob and downloaded directly to your device. Once the conversion is complete, all data is released from memory.