OBJ to STL Converter
Convert your OBJ files to STL format for free. No sign up or credit card required.
Convert OBJ files to STL format quickly and securely in your browser. Or skip the conversion entirely — browse free STL 3D models ready to download.
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To convert OBJ to STL, upload your OBJ file and download the STL in seconds — free, in your browser, with no sign-up or watermark. Because STL stores only mesh geometry, textures and materials and UV coordinates are dropped.
How to convert OBJ to STL
- Upload your OBJ file — drag and drop it above, or click to browse. Files load instantly in your browser.
- Confirm STL as the output format and start the conversion. It runs in seconds; no account or payment is required.
- Download your STL file, ready to use in Cura.
What is kept and what is lost converting OBJ to STL?
| Property | In OBJ | In STL |
|---|---|---|
| Mesh geometry | Yes | Kept |
| UV coordinates | Yes | Dropped |
| Materials & textures | Yes | Dropped |
STL is a triangle-mesh format for 3D printing that stores only surface geometry — it has no concept of color, texture, materials or scene structure.
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OBJ to STL Conversion FAQ
Get answers to common questions about converting OBJ files to STL format. Learn about the conversion process, file compatibility, and best practices.
File format information for OBJ and STL
Detailed information about the source and target file formats, including their capabilities and specifications.
OBJ Format
OBJ (Wavefront Object): A widely-used, open file format (.obj) for 3D geometry, storing vertex, texture, and normal data. Developed by Wavefront Technologies, it's simple and supports interoperability across 3D software.
OBJ Converter Capabilities
When converting 3D model or mesh files using our OBJ converter, we will attempt to convert color materials into a suitable format for use in the converted file.
STL Format
STL (Stereolithography): A file format (.stl) for 3D printing and CAD, representing surface geometry as a mesh of triangles. It's simple, widely supported, but lacks color or texture data.
STL Converter Capabilities
When converting 3D model or mesh files using our STL converter, we will attempt to convert color materials into a suitable format for use in the converted file.
Information for converting from OBJ to STL
About the OBJ to STL converter
FurniMesh's OBJ to STL converter runs entirely in your browser using a WebAssembly glTF/3D-mesh pipeline — your file never leaves your tab, and the conversion completes in seconds for typical furniture-model files. Materials, UV maps, and scene hierarchy are preserved wherever the STL format supports them (note: STL is a geometry-only format and discards materials by design). There's no sign-up (up to 20 conversions a day) and no watermark; files up to 50 MB — practical limits depend on your browser's available memory.
FurniMesh natively outputs four formats — GLB, OBJ, SKP (SketchUp 2017+), and BLEND (Blender 3.0+). Bridge conversion via this converter additionally produces FBX, STL, GLTF, 3DM (Rhino), PLY and OFF, and reads IFC, DAE, 3DS and 3MF files. Use the converter to bridge between supported formats — or skip the conversion step entirely if you don't have a source file yet (the FurniMesh library ships every model in all four native formats pre-rendered).