How to convert PLY to STL
- Add your .PLY file - drop it in the box above or click to browse.
- Convert it to .STL in a few seconds.
- Download your new .STL file.
What to expect
- STL has no colour support - any per-vertex RGB from a scanner or photogrammetry pipeline is lost; use OBJ or GLB if colour matters.
- A PLY from a LiDAR or depth sensor may be a point cloud with no faces; run surface reconstruction (e.g. Screened Poisson in MeshLab) before exporting.
- Scan meshes often contain holes or non-manifold edges that cause slicer errors - run mesh-repair filters in MeshLab before export.
Frequently asked questions
Will my model's colours survive the conversion?
No. STL has no colour field, so geometry transfers correctly but all vertex colour data is discarded. For colour 3D printing, use OBJ or GLB instead.
My PLY file shows only dots in the viewer - what is wrong?
The file is a point cloud with no face data. Run surface reconstruction first - MeshLab's Screened Poisson filter turns it into a watertight mesh you can export.
Does conversion change the geometry?
Not for a standard polygon-mesh PLY - faces and vertex positions transfer directly. Changes only occur if you deliberately apply repair or decimation filters.
Binary or ASCII STL - which should I choose?
Binary STL is smaller and preferred by most slicers; both carry identical geometry, so binary is the better default.
Programs that convert PLY: PolyTrans|CAD+DCC · 3D Builder · 3Data Expert · meshconv · Metasequoia · TransMagic · Autoconverter · Afanche 3D Viewer for Mac
