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STL Converter

Convert Stereolithography (.stl) files online instantly. No signup, no watermarks. Drag & drop your file and download in seconds.

Convert STL to…

15 output formats available for .stl files

STL → OBJSTL → PLYSTL → GLTFSTL → GLBSTL → DAESTL → FBXSTL → 3DSSTL → 3MFSTL → X3DSTL → USDSTL → USDCSTL → USDZSTL → ABCSTL → PNGSTL → JPG

Convert … to STL

15 input formats can be converted to .stl

OBJ → STLPLY → STLGLTF → STLGLB → STLDAE → STLOFF → STLFBX → STL3DS → STL3MF → STLX3D → STLAMF → STLUSD → STLUSDC → STLUSDZ → STLABC → STL

About Stereolithography

STL stores 3D surface geometry as triangulated meshes — the standard for 3D printing.

STL Format Details →Browse 3D Formats →

Frequently Asked Questions

How do I convert STL files?▼

Upload your .stl file to CocoConvert, select your desired output format, and click Convert. Your file is processed on secure servers and ready to download in seconds. No software installation needed.

How much does STL conversion cost?▼

CocoConvert offers STL conversion with no signup required. You get 5 files per hour (up to 250 MB each) on the starter tier. Pro users get 100 files per hour and 5 GB per file.

What formats can I convert STL to?▼

CocoConvert supports converting STL to 15 different formats including OBJ, PLY, GLTF, GLB, DAE and 10 more.

Are my files secure?▼

Yes. Files are encrypted in transit via TLS, processed on isolated servers in Germany, never analysed or shared, and permanently deleted within 24 hours.