Free 3D File Converter — Runs in Your Browser
Ten conversions, all of them free and all of them local. Drop a file, take the result — nothing is uploaded, there is no signup, and there is no watermark on anything that comes out.
How the browser-side converter works
There is no server in this loop, which is the whole reason it is free and the whole reason it is private.
The file is read locally
Your browser opens the file with the File API. Nothing is POSTed, so there is nothing to queue behind and nothing to delete afterwards.
three.js parses and re-exports it
The same loaders a 3D web viewer uses build the scene in memory, world transforms are baked in, and an exporter writes the target format.
The result is handed back
The converted file appears as a normal download. It is not stored, not watermarked and not counted against any quota.
One thing worth knowing before you start. A conversion can only ever keep what both formats can hold. Going into a geometry-only format like STL drops colour and materials, and no converter anywhere can get around that.
What the converter reads and writes
Import and export are not the same list — a couple of formats are readable but not writable, and one is the other way round.
Formats it can read
Anything on this list can be dropped in as the source file.
FBX and DAE are read but not written: they are proprietary or legacy interchange formats, and glTF exists precisely to replace them.
Formats it can write
Anything on this list can be the target of a conversion.
USDZ can be written but not read — it is a delivery format for Apple's AR Quick Look, so keep your GLB as the working copy.
Make a 3D model right here
You do not have to go back to the home page. Type a prompt or drop an image, and take the .glb — free, anonymous, no watermark.
Converter — frequently asked questions
Ten pairs are set up with their own page: GLB to STL, OBJ, 3MF and USDZ, and STL, OBJ, FBX, DAE, PLY and 3MF back into GLB or STL. They all use the same browser-side converter, so any of them takes seconds.
There is no server limit, because there is no server in the loop. The practical ceiling is your own memory — a desktop handles a couple of hundred megabytes comfortably, a phone gives up much sooner.
Convert a 3D file, free, right now
No signup, no upload, no watermark. Pick a pair above, or make a model first and convert it after.
FreeNo signupNothing uploadedNo watermark