OBJ to STL converter
Convert OBJ to STL for free, with no sign-up and no paywall after upload.
- Where it runs
- Our server, files deleted in 60 min
- Free allowance
- 25 files a day, up to 200 MB each
- Typical time
- Usually under a minute
- Sign-up
- Not needed
What happens to your OBJ
The mesh, normals and, where STL supports them, materials and textures carry over. STL keeps only the shape, which is all a 3D printer needs.
This conversion runs on our server. Your file is deleted within 60 minutes, and you can delete it yourself as soon as you have downloaded the result.
How to convert OBJ to STL
- Choose your file Tap Choose files and pick the OBJ file, or drop it onto the page. You can add several at once.
- Convert to STL Tap Convert. The file is sent over an encrypted connection and converted on our server.
- Download Tap Download to save the STL file. It is deleted from our server within 60 minutes, or straight away if you tap Delete.
What is an OBJ file?
The most widely supported 3D model format, used by every 3D app and many 3D printers.
Blender, Windows 3D Viewer, Maya, Cinema 4D.
What is an STL file?
The standard format for 3D printing. It stores only the surface shape, with no colour.
Cura, PrusaSlicer, Bambu Studio, Blender, Windows 3D Viewer.
Questions
Is converting OBJ to STL free?
Yes. You can convert up to 25 files a day on our server for free, each up to 200 MB, with no sign-up. The limit is shown before you upload, and we never ask you to pay to download a file you have already converted.
Is it safe to convert my OBJ files here?
Yes. Files travel over an encrypted connection, are processed on our own server, and are deleted within 60 minutes. Nobody looks at them, and you can delete them yourself straight after downloading.
How long does OBJ to STL take?
Usually under a minute. Bigger files take longer, and you can watch the progress on each file.
Can I convert OBJ to STL on my iPhone or Android phone?
Yes. The converter works in Safari, Chrome and any modern browser. Tap Choose files, pick from Photos or Files, and download the result to your phone.
How do I open an STL file?
Cura, PrusaSlicer, Bambu Studio, Blender, Windows 3D Viewer.