3D Model Converter
Convert between STL, OBJ, GLB, PLY, FBX, and more. Batch conversion with scaling and unit conversion.
Free & unlimited
Drop 3D model files here or browse your files
Supports STL, OBJ, GLB, GLTF, PLY, FBX, DAE, 3DS — batch supported
Processed on our servers and deleted right after. Never stored or shared.
About this tool
- 1
Upload a 3D model
Drop STL, OBJ, GLB, GLTF, PLY, FBX, DAE, or 3DS files. Batch upload is supported.
- 2
Choose the output format
Select the target format - STL, OBJ, GLB, glTF, PLY, or FBX.
- 3
Configure options
Open Advanced Options to set scale factor, unit conversion (mm/cm/inch/m), or STL encoding (binary/ASCII).
- 4
Convert and download
Click Convert and download each result individually, or use Convert All for batch processing.
- Binary STL files are much smaller than ASCII - always choose binary unless your slicer specifically requires ASCII.
- If the model appears inside-out after conversion, try re-importing into a 3D editor and recalculating normals.
- GLB is the best format for sharing 3D models on the web - it bundles geometry, materials, and textures into one file.
- Check the triangle count before sending STL files to a 3D printer - very high-poly models may slow down slicing.
- Convert between STL, OBJ, GLB, glTF, PLY, and FBX formats
- Supports 8 input formats with batch conversion
- Scale factor and unit conversion (mm, cm, inch, m)
- Binary and ASCII STL export options
- Server-side processing for reliable format conversion
- Converting OBJ models to STL for 3D printing in slicers like Cura or PrusaSlicer
- Exporting GLB files for embedding 3D product views on e-commerce websites
- Converting STL to OBJ for import into Blender or other 3D editors
- Preparing AR-ready GLB models for Google Search or Apple Quick Look
STL does not support materials or textures - only geometry. Converting to STL strips color data. GLB and OBJ preserve materials when converting between those two formats.
Processing happens in your browser, so the limit depends on your device memory. Most devices handle files up to 200 MB without issues. Very large models may be slow.
STL stores only triangle mesh geometry and is the standard for 3D printing. OBJ supports quads, materials, and texture coordinates, making it more versatile for general 3D work.