Convert 3D formats

STL, OBJ, PLY, GLB, GLTF and 3MF in — STL, OBJ, PLY or GLB out. One at a time or in batch with a zip download. Conversion happens in your browser: nothing gets uploaded.

Direct conversions

STL → PLYSTL → OBJSTL → GLBPLY → STLPLY → OBJPLY → GLBOBJ → STLOBJ → PLYOBJ → GLBglTF → STLglTF → PLYglTF → OBJglTF → GLBGLB → STLGLB → PLYGLB → OBJ3MF → STL3MF → PLY3MF → OBJ3MF → GLB

What this tool does

How it works

  1. 01

    Drop your files

    One or many 3D models. Conversion runs in your browser — files are never uploaded.

  2. 02

    Pick the target format

    STL for printing, GLB for web/AR, OBJ for DCC tools, PLY for color scans.

  3. 03

    Download

    A single converted file, or a ZIP when you convert in batch.

Frequently asked questions

Does converting change the model's dimensions?

No. Unlike many online converters, the mesh is never rescaled or recentered here: coordinates are copied as-is, so your millimeter-calibrated part still measures the same.

What gets lost converting to STL?

STL only stores triangles: vertex colors, textures, materials and scene structure are dropped. For single-color printing that's irrelevant; to keep appearance use GLB or PLY.

Why can't I convert TO GLTF, only GLB?

GLB is GLTF packed into a single binary file — simpler to download and share. Anything that opens GLTF opens GLB, so we always export GLB.

Does it support 3MF files?

As input, yes: open a 3MF and export it to STL, OBJ, PLY or GLB. Not as output yet — virtually every slicer takes STL without complaint.