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STL File Format

The standard format for 3D printing, storing surface geometry only.

Convert to

STL at a glance

Full nameStereolithography
MIME typemodel/stl
Category3D & CAD
Best for3D printing, CAD previews
CompatibilityUniversal in slicers; no colour or materials.

Convert STL to another format

STL to 264STL to 265STL to 266STL to 302STL to 3DSSTL to 3G2STL to 3GPSTL to 3MF

Convert other formats to STL

OBJ to STLSTEP to STL

Frequently asked questions

What is a STL file?
STL is the standard format for 3D printing, storing surface geometry only. Technically it is Stereolithography, with the MIME type model/stl.
What can I convert STL to?
converthubor can turn STL into 225 different formats, including 264, 265, 266, 302, 3DS, 3G2.
What can I convert STL from?
You can create STL files from formats such as RAW, XML, OBJ, FBX, GLTF, GLB.
Is converting STL free?
Yes, every conversion on this site is free and does not require an account.