STL2STEP

Mesh → analytic B-rep

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Drop an STL file here
or click anywhere to browse

Model

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Convert

Processing…

Options

Crease angle (°) 30

STEP schema

Show wireframe

All processing runs locally in your browser — your files never leave your device. The first conversion downloads the OpenCASCADE engine (~25 MB) and caches it for instant reuse.

STL2STEP uses Three.js (MIT) and OpenCASCADE.js (LGPL).