Convert STL to OBJ.
Convert an STL 3D model to OBJ for editing in most 3D software. Vertices and faces preserved exactly.
How it works
- 01
Upload your STL
Drop a 3D model or pick one from your device. Private by default.
- 02
Convert with trimesh
trimesh reads the geometry and writes OBJ — vertices and faces preserved exactly, no paid API in the loop.
- 03
Download or hand off
Grab your OBJ, or open it in TranscriptAI to do more.
Geometry preserved exactly — vertices & faces
Watertight meshes stay watertight
Private uploads, auto-deleted after 1 hour
No watermark, no signup to try
Free and open-source engine (trimesh)
Direct handoff to TranscriptAI
Your file is ready. Want to do more with it?
Open this file in TranscriptAI to generate a transcript, summary, structured notes, flashcards, quiz questions or action items — automatically.
Common questions
Is it free?+
Yes — convert STL to OBJ free. Paid plans add larger files, batch and priority.
Is my model private?+
Uploads go to a private bucket, are converted, and auto-delete after 1 hour. Files never touch a third-party converter.
Is the geometry changed?+
No — vertices and faces are preserved exactly. Multi-part scenes are merged into a single mesh for clean output.
Related workflows