Convert OBJ to PLY - Free Online Converter
Drop a .obj file below and download it as binary .ply in seconds. The conversion runs entirely in your browser - no upload, no signup, no watermark. The standard route into scan-processing and research pipelines.
Updated July 2026
Done in seconds
Your OBJ converts to PLY locally in your browser - no upload queue, no waiting.
Private by design
Your file never leaves your device. Nothing is uploaded, nothing is stored.
Free, no strings
No signup, no watermark, no file limit - convert as many files as you need.
How to convert obj to ply
Drop your OBJ file
Drag the .obj file into the converter above or click to browse. No account and no upload - the file stays on your device.
Conversion runs in your browser
The model is parsed and rewritten locally, in seconds for typical files. Geometry is carried over 1:1 - no remeshing, no quality loss.
Download the PLY
The .ply download starts from the same spot. Convert as many files as you like - there is no limit or watermark.
OBJ and PLY, explained
What is OBJ?
OBJ is the plain-text workhorse of 3D interchange. It stores vertices, faces, UV coordinates, and normals in a human-readable file, with materials referenced from a companion .mtl file. Practically every 3D application of the last 30 years can read it.
Because OBJ splits materials and textures into separate files, a bare .obj carries geometry and UVs but shows up untextured unless the .mtl and texture images travel with it. It has no units, no rigging, and no animation - which keeps it simple and universally compatible.
- Developed by
- Wavefront Technologies (circa 1990)
- Structure
- Plain-text geometry, with materials in a separate .mtl file
- Used by
- Blender, Maya, 3ds Max, ZBrush, game engines, 3D scanners
What is PLY?
PLY was designed at Stanford to store scanned 3D data. Its superpower is per-vertex properties - most importantly vertex colors - which makes it the default output of 3D scanners, photogrammetry pipelines, and Gaussian-splatting tools.
PLY stores flexible per-vertex data (position, color, normal, confidence) plus faces. It has no materials, textures, or units. Scan data usually moves through PLY on its way to a printable STL or a web-ready GLB.
- Developed by
- Stanford University (1994)
- Structure
- Binary or ASCII vertex/face lists with per-vertex properties
- Used by
- 3D scanners, photogrammetry tools, MeshLab, research software
What survives the obj to ply conversion
Format conversion is honest work: some data has nowhere to go in the target format. Here is exactly what carries over.
Mesh geometry
All faces carry over exactly, triangulated the standard way.
Normals
Per-vertex normals are written into the PLY.
Compact binary output
The PLY is written in binary form - significantly smaller and faster to parse than ASCII.
Materials & textures
PLY has no material system; OBJ's .mtl references are dropped (they are not in the dropped file anyway).
When should you convert OBJ to PLY?
Convert to PLY when a tool in the scan/research world demands it: MeshLab workflows, CloudCompare comparisons, geometry-processing libraries, and academic codebases are all PLY-first.
For everything mainstream, OBJ (or GLB) is the more portable side - convert back once the specialist processing is done.
And if what you actually need is a new model rather than a new file format: 3D AI Studio's main tool can generate 3D models from photos with AI - with exports to every format on this page.
OBJ to PLY - frequently asked questions
Made with 3D AI Studio
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