Convert STL to OBJ Online
Convert STL 3D models to Wavefront OBJ format directly in your browser — free, with no upload and no software to install. Preview the geometry, then download the converted .obj file.
Need OBJ for texturing, rendering, or a game engine? This STL to OBJ converter preserves your model's exact triangle geometry, with nothing lost in translation.
Drop your STL file here
Supported format: .STL
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Frequently Asked Questions
What is an OBJ file?
OBJ (Wavefront OBJ) is a widely supported 3D geometry format that stores vertex positions and normals as plain text — readable by nearly every 3D application.
How do I convert an STL file to OBJ?
Drop your .stl file into the STL to OBJ converter above, wait for the model to load and preview, then click Convert to OBJ and download the .obj file. The whole conversion (.stl to .obj) runs in your browser — no software install or account needed.
Will I lose any data converting STL to OBJ?
No geometry is lost. STL contains only triangle geometry, and OBJ stores the same triangle geometry — the conversion is a direct, lossless translation.
Which is better, OBJ or STL?
Neither is universally "better" — they solve different problems. STL is simpler and is the de facto standard for 3D printing, but it's geometry-only. OBJ is also broadly supported and can carry additional data (like texture coordinates and material references) that STL can't, which is why OBJ is often preferred for rendering, texturing, and game-engine workflows.
Is my STL file uploaded to a server?
No. The conversion happens entirely in your browser. Your file is never sent to our servers.
Does OBJ include color or texture information?
This converter outputs geometry only (vertices and normals), matching what STL itself contains. STL has no color or texture data to carry over.
Can I open the OBJ file in Blender or other 3D software?
Yes. OBJ is one of the most universally supported 3D formats and opens in virtually any 3D modeling, rendering, or game engine tool.