OBJ→STLConverter
Convert your OBJ files to STL format instantly. Free, fast, and secure - your files never leave your browser.
↔ Convert STL to OBJ insteadDrop file or click to browse
Max 100MB • Auto-deletes after 3 min
How to Convert OBJ to STL
Upload Your File
Drag & drop your OBJ file or click to browse. Files up to 100MB are supported.
Convert
Click "Convert to STL" and wait a few seconds for processing.
Download
Download your converted STL file instantly. No registration needed.
Why Convert OBJ to STL?
Converting OBJ to STL enables cross-platform CAD compatibility, letting you share 3D models with collaborators using different engineering and design software.
About OBJ and STL
What is OBJ?
OBJ (Wavefront Object) is a universal 3D model format that stores geometry, textures, and material data. It's widely supported by 3D modeling and rendering software.
What is STL?
STL (Stereolithography) is the standard file format for 3D printing, describing only the surface geometry of 3D objects as a mesh of triangles.
Frequently Asked Questions
How do I convert OBJ to STL?
Upload your OBJ file using the converter above, then click "Convert". Your file will be processed and you can download the converted STL file immediately. The entire process takes just seconds.
Is it free to convert OBJ to STL?
Yes, ModConvert is completely free to use. There are no hidden charges, no registration required, and no watermarks on your converted files.
Is my OBJ file safe when converting?
Absolutely. Your files are processed securely and are never stored permanently on our servers. Files are automatically cleaned up after conversion to protect your privacy.
What is the maximum file size for OBJ to STL conversion?
You can convert OBJ files up to 100MB in size. This covers most common use cases for cad files.
Can I convert multiple OBJ files at once?
Yes, you can upload and convert multiple OBJ files. Each file will be converted to STL format individually for the best quality results.