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PLY to STL

PT

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PLY to STL: convert a scanner’s mesh for printing

Scanners and photogrammetry programs often save as PLY. If the PLY has a mesh (faces), open it and download the STL for the 3D printer. If it is only a point cloud, there is no surface to print, and the app warns you instead of generating an empty file.

Demo model
Convert to STLGeometry only — for 3D printing

Size in the STL: 3,628.8 × 4,366.5 × 3,332.4 mm — too large for most printers: check the unit.

How to do it, step by step

  1. Open or drag the .ply file.
  2. Check in the scene that it is a surface (mesh) and not just points.
  3. Check the “Size in the STL” and the unit.
  4. Click Convert and download.

See where to click, with an image of the tool →

When this is useful

Print the mesh from a 3D scanner

Convert the mesh’s PLY to STL.

Print the result of photogrammetry

If the program exported a mesh as PLY, convert it to STL.

Tips for a good result

  • A point cloud appears as loose points in the scene; a mesh appears as a surface.
  • If it is a point cloud, generate the mesh in the scanner’s program and convert again.

What this tool does not do

  • A point cloud (PLY without faces) cannot become STL: the app refuses the conversion, and explains why.
  • STL stores no colors or textures: only the shape. Colors from a scan are left out.
  • The app does not repair the model: it does not close holes, does not check whether the mesh is closed and does not trim parts. Scans usually have flaws, and the slicer (or a mesh editing program) may need to fix them.
  • The STL file does not store the unit. The app writes in millimeters, which is what most slicers expect, and shows the final size before downloading: check that it matches the real object.
  • Files of up to 400 MB. Everything is done in the browser, without sending the model.
  • The app converts and shows the model: it does not edit the mesh or the textures.

Frequently asked questions

What happens with a point cloud?
The app warns that the STL would be empty and does not generate the file.

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Text written by Marcelo Amantino · updated October 18, 2026 · who we are