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OBJ to STL Converter

Convert OBJ (.obj) to STL (.stl) via a free public conversion API from the browser. UniConvert is come-convert-leave: no account and no permanent file library.

Open the interactive OBJ to STL Converter (loads automatically when JavaScript is available).

How to convert OBJ to STL

Step 1. Choose a .obj file from your device.
Step 2. Confirm the output format is .stl — this page is already set to OBJ → STL.
Step 3. Start the conversion, then preview, copy, or download the .stl result. Nothing is kept for later.

Why convert OBJ to STL here

OBJ → STL uses a free public API called directly from the page — no UniConvert servers in the middle.
Category: 3D Models — Mesh and scene formats for 3D pipelines, gated by real engine support.
No signup, no subscription, and no permanent storage of your files on UniConvert.
Status: available now.

OBJ to STL FAQ

Is this OBJ to STL converter free?

Yes. UniConvert does not require an account for OBJ → STL. Ads may appear to keep the site free.

Do you store my OBJ files?

Files for this pair are sent to the free conversion provider for processing and are not stored by UniConvert afterward.

What is the difference between .obj and .stl?

.obj is treated as the input format and .stl as the output. Use this page when you specifically need OBJ → STL rather than a generic upload form.

Can I convert other formats in 3D Models?

Yes — open the 3D Models category for other pairs, or use Convert a file to pick any available source and target.