Server-side engine — in rollout
Convert STEP to STL Online
Convert STEP CAD models to STL meshes for 3D printing and slicer workflows.
STEP to STL runs on our server-side pipeline — in rollout
Unlike our image tools, this conversion needs the server-side engine, which is rolling out now and is not available in the browser yet. We will not pretend otherwise or waste your time with a broken uploader.
Prepping CAD assemblies for slicing
Sharing mechanical parts with 3D printing services
Works right now, in your browser
These pairs run entirely on your device with zero uploads — the same privacy, proven:
Prefer the API?
The REST API accepts programmatic conversion jobs and reports per-job status. This pair routes to the server-side tier as the engine rollout progresses.
Browse every conversion pair
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