Convert STL to OBJ Online
Convert your STL 3D models to OBJ format directly in your browser. No software to install, no account to create. Your files are processed locally and never leave your device.
Convert STL to OBJ
Your file is processed entirely on your device. Nothing is uploaded to any server.
How to Convert STL to OBJ
- Choose your STL file — Drop it onto the box above, or click to browse. The file is read directly from your device and never uploaded.
- Wait a moment — Your STL file is parsed and rewritten as OBJ in this browser tab. Most models finish in a second or two.
- Save the OBJ — The converted file downloads automatically, keeping the original name with a .obj extension.
- Open it anywhere — The result works in Blender, MeshLab, 3ds Max, Maya and most 3D applications.
Features
Client-Side Conversion
The entire conversion happens in your browser using WebGL and Three.js. Your STL file is parsed, rendered in 3D, and exported as OBJ. No server involved.
3D Preview
View your STL model in an interactive 3D viewer before converting. Orbit, zoom, and pan to inspect every detail of your model.
Preserves Geometry
The conversion preserves all mesh geometry, vertices, and faces from your STL file. Both ASCII and binary STL formats are supported.
Works Offline
Once the page loads, the converter works entirely offline. Your files never leave your device, ensuring complete privacy.
Frequently Asked Questions
What is the difference between STL and OBJ?
STL (Stereolithography) stores only geometry as triangulated surfaces, commonly used in 3D printing. OBJ (Wavefront) supports geometry, normals, texture coordinates, and materials, making it more versatile for 3D graphics and rendering.
Is the conversion accurate?
Yes. All vertices and faces from the STL file are preserved in the OBJ output. The geometry is converted without any loss of precision.
Does it support binary STL files?
Yes. Both ASCII and binary STL formats are fully supported. The viewer automatically detects the format and parses it correctly.
Is there a file size limit?
There is no enforced limit. Conversion speed depends on your device. Most STL files convert in a few seconds.
Can I convert OBJ back to STL?
Yes. You can also convert OBJ to STL using our converter.
Other Converters
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Open, view, and convert STL to OBJ in seconds. No installation needed.
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