OBJ
Wavefront OBJ — a widely supported 3D geometry format.
LinksConverterOBJ to STL Converter
Convert a Wavefront OBJ model into a watertight STL ready for 3D printing. STL is the universal input format for slicers like Cura, PrusaSlicer, and Bambu Studio, so this is the quickest way to get a downloaded or modelled OBJ onto your printer.
Drag & drop a file hereor click to browse from your device
When to convert OBJ to STL
- Prepare an OBJ model for slicing and 3D printing
- Standardize assets to STL for a print farm
- Strip textures/materials down to pure printable geometry
About the OBJ and STL formats
STL
Stereolithography mesh — the standard format for 3D printing.
Why use LinksConverter for this conversion
Fast cloud pipeline
Server-side ffmpeg + yt-dlp on auto-scaling workers. Most files finish in seconds, not minutes.
ClamAV scanned
Every uploaded or fetched file is virus-scanned before it ever reaches your download.
Auto-deleted after 2 hours
Files live on encrypted S3 storage for 2 hours, then are permanently purged. We never log file contents.
No sign-up, no watermark
Free for up to 10 conversions per hour with no account. Pro unlocks larger files and priority queue.
How to convert OBJ to STL
Upload or paste a OBJ link
Drop a OBJ file from your device, or paste a public URL pointing to the OBJ you want to convert.
Confirm STL as the output format
The output is pre-set to STL. You can adjust quality or bitrate in the advanced options if you need a smaller file.
Start the conversion
Click Convert. Our cloud workers fetch the OBJ, scan it for malware, and run the OBJ → STL pipeline.
Download your STL file
A one-time pre-signed link appears as soon as the STL is ready. The file is automatically deleted from our storage 2 hours later.
OBJ to STL — Frequently asked questions
Yes — the geometry and dimensions are preserved. Note that OBJ and STL are unitless, so confirm the scale (mm vs cm) in your slicer after importing.
Yes. LinksConverter converts OBJ to STL for free with no email, sign-up, or watermark. Anonymous users get up to 10 conversions per hour; the optional Pro tier raises that to 500 and adds priority queue access.
Yes. Files are processed in an isolated worker, scanned with ClamAV antivirus, served via a one-time pre-signed URL, and automatically purged from our S3 storage after 2 hours. We never log file contents and request URLs are masked in our server logs.
Free conversions accept files up to 500 MB. Pro accounts can convert up to 5 GB in a single job. Very large files automatically chunk the upload to avoid browser timeouts.
Related conversions
Browse other popular file conversions handled by the same pipeline.