Free & Instant

Convert OBJ to STL 3D Model Online — Free Converter

Transform OBJ 3D models to STL for 3D printing.

Upload your file

Drag & drop your .obj file here, or browse
Multiple files supported

.OBJ.STL

Maximum file size: 500 MB · Multiple files supported

100% private — files are processed in your browser, never uploaded

How It Works

OBJ to STL in 4 Easy Steps

Convert OBJ to STL in seconds — no sign-up, no upload, no catch.

  1. 1

    Upload OBJ file

    Drop your .obj 3D model or click Browse.

  2. 2

    STL auto-selected

    STL is pre-selected as the output format.

  3. 3

    Convert locally

    Your 3D model is converted to STL in your browser.

  4. 4

    Download STL

    Save your STL file — ready for 3D printing.

Use Cases

Why convert OBJ to STL?

  • Prepare OBJ models for 3D printing
  • Convert models for Cura, PrusaSlicer, and other slicers
  • Make OBJ files usable in CAD software
FAQ

Frequently Asked Questions

Yes. All vertices, faces, and normals are converted faithfully.