Updated June 2026 · runs 100% in your browser

3D Model Converter

Convert 3D models between STL, OBJ, PLY, GLB and glTF on your device. No upload, no sign-up, no limits.

Drop 3D models here

or click to choose

🔒 Processed on your device · 0 bytes uploaded

Loads the 3D engine (~1 MB) on first use — cached after that.

How it works

Drop a model, choose an output format, and download the converted file.

It all runs in your browser with a local copy of three.js — your model never leaves your device, and it stays free, unlimited and private.

About 3D Model Converter

Drop almost any common mesh — STL, OBJ, PLY, GLB, glTF or 3MF — pick an output format, and convert. Everything runs on your device.

Tips & common uses

This converts between common 3D mesh formats so a model from one program opens in another, or is ready for 3D printing, the web, or a game engine.

  • 3D printing usually wants STL — convert OBJ or glTF models before slicing.
  • Web and AR prefer glTF/GLB, which are compact and carry materials and textures.
  • General exchange between modeling apps often uses OBJ, which nearly everything reads.
  • Game engines import several of these formats; converting first avoids import errors.

Frequently asked questions

How do I use 3D Model Converter?
Drop a model, choose an output format, and download the converted file.
Which formats are supported?
In: STL, OBJ, PLY, GLB, glTF and 3MF. Out: STL, OBJ, PLY, GLB and glTF.
Is my file uploaded?
No. It is converted on your device with a local copy of three.js; nothing is uploaded.
Which 3D format should I use?
STL for 3D printing, glTF/GLB for web and AR, and OBJ for broad compatibility between modeling tools.
Are textures and colors preserved?
It depends on the formats — glTF/GLB carry materials and textures, while STL stores only geometry, so color and texture are dropped when converting to STL.