Convert glTF to PLY
Convert glTF to PLY in your browser. The conversion runs on this page and the file never leaves your computer.
Result
Before you convert: what this keeps and what it destroys
Preserved
- The geometry, triangle for triangle
- Overall dimensions and proportions
- Watertightness, where the input is watertight
- Colour
Destroyed
- A recorded unit: PLY stores none
- The separation between parts, merged into one body
- Animation, rigs, cameras and lights, if the file has them
↺ the reverse: PLY → glTF · about .gltf · about .ply · just view it instead
Why people convert glTF to PLY
Taking a web asset into mesh processing. This is the usual first step when a photogrammetry or scanning service delivers glTF and the analysis has to happen in CloudCompare or MeshLab.
PLY keeps colour per vertex in the file, so surface colour from a scan survives without a texture or a material library. For scan data that is often the whole point.
The scene structure flattens into one mesh, and coordinates are multiplied by 1000 into millimetres. If the file you have is a .gltf with its buffer in a separate .bin, convert the GLB instead.
What you get
You get a binary PLY file containing the same triangles the glTF file described. No geometry is added, removed or approximated: mesh-to-mesh conversion is a change of container, and this site's tests check that the triangle count comes out identical.
Carried across: supported base or vertex colour.
Not carried across by this conversion: a recorded unit, the assembly structure.
The conversion runs in your browser. Your file stays on your computer and is not uploaded.
What to check afterwards
- glTF and GLB use metres by specification. This converter interprets the source coordinates that way. If the model was authored at a different scale, confirm a known dimension before using the output.
- The numbers change. PLY is read in millimetres and glTF in metres, so every coordinate is rescaled. The result is the same physical size, but the numbers in the file are different numbers.
- Separate parts merge into one body. glTF can describe an assembly and PLY cannot, so a multi-part model arrives as a single mesh. 3MF and GLB both keep the structure if you need it.
- Coordinates are stored as 32-bit floats. For a part measured in millimetres that's far finer than any machine tolerance. For a model spanning hundreds of thousands of units it isn't.
If you need something this conversion cannot give you
If the unit has to be unambiguous, convert to 3MF instead. It records the unit in the file, so nobody downstream has to assume millimetres and nobody has to scale by 25.4 after the fact.
If the parts must stay separate, convert to 3MF or GLB. Both keep a real structure, so a five-part assembly arrives as five parts rather than one merged body.
Going the other way
Convert PLY back to glTF. The reverse conversion also works with mesh geometry. It does not reconstruct exact CAD surfaces. Material data and part structure lost in either direction cannot be restored by converting back. Keep the original file for later edits.
How we know this conversion works
This pair was checked against 1 file from the test corpus on 2026-09-04. Each run parses its own output back in and compares the bounding box, the triangle count and, for closed solids, the volume against the input.
A pair that fails those checks doesn't get a page. That's why this site lists 120 conversions and not the several hundred a format-times-format grid would suggest.