OBJ to STL Converter

Convert OBJ files to STL format for 3D printing - Free online converter

Select OBJ File

OBJ to STL Converter - Free 3D Printing Tool

Convert your OBJ files to STL format for 3D printing with our free online converter. Perfect for preparing 3D models for FDM, SLA, and other 3D printing technologies. No software installation required.

Why Convert OBJ to STL for 3D Printing?

3D Printer Compatibility: Most 3D printers and slicers prefer STL format
Simplified Geometry: STL focuses purely on mesh geometry, perfect for printing
Universal Support: STL is the standard format for 3D printing
Smaller File Size: STL files are often smaller without texture data
Slicer Optimization: Slicing software is optimized for STL files

OBJ vs STL for 3D Printing

OBJ Files: Great for detailed models with materials and textures, but may include unnecessary data for 3D printing.

STL Files: Optimized for 3D printing with pure geometric data. Supported by all major 3D printers and slicing software.

3D Printing Workflow: OBJ to STL

Upload your OBJ file using the converter above
Download the converted STL file
Import the STL into your slicer (Cura, PrusaSlicer, etc.)
Configure print settings and slice
Send to your 3D printer and print!

💡 Pro Tip: Check your OBJ file for manifold geometry before converting. Non-manifold meshes can cause 3D printing issues even after conversion to STL.

Need different format conversions?

STL to OBJ GLTF to STL PLY to STL All Formats

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