STL File Converter

Convert to and from Stereolithography (STL) securely online. Fast, free, and no installation required.

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About STL Format

Stereolithography (STL) is a 3D file format used primarily for 3D Printing and Rapid Prototyping.

Standard 3D printing format representing surface geometry via triangles.

Frequently Asked Questions

Stereolithography (STL) is a 3D file format. Standard 3D printing format representing surface geometry via triangles. Common use cases include: 3D Printing, Rapid Prototyping.