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STL to OFF converter
Export STL triangle geometry as OFF for your next mesh workflow.
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FROM FILE TO FINISHED MESH
How to convert your file
Review your settings
Choose the right mode, scale and detail. Processing runs in your browser.
Inspect and download
Rotate the preview, save the output and verify it in your next application.
How STL to OFF works
The exported model retains its numeric coordinates. For 3MF and AMF, STL coordinates are interpreted as millimeters. For GLB and glTF, millimeter source coordinates are divided by 1000 to write meters.
Compatibility and limitations
This changes the container for geometry. It does not recover colors, textures, animation, CAD surfaces or a feature history. Check destination units before using the model.
Get a more reliable result
Start with a clean source, choose dimensions appropriate to the intended use, and inspect the exported file. A successful conversion does not guarantee printability or automatic mesh repair. Read our detailed workflow guide for the decisions that matter.
Processing limits
STEP input: 20 MB. STL, OBJ and 3MF input: 50 MB. Output is limited to 1.2 million triangles. Complex models may need simplification in the source application.
One file at a time. Processing stops after 90 seconds. Files remain in browser memory, and no conversion upload is performed. Replacing a file clears the previous result. Closing the tab releases its working data.
Questions about STL to OFF
What information changes during conversion?
This changes the container for geometry. It does not recover colors, textures, animation, CAD surfaces or a feature history. Check destination units before using the model.
How do I inspect the output?
Open STL output in the STL viewer, then verify the scale and geometry in your slicer. OBJ output can be checked in a mesh application.
Where can I learn more?
Read the related guide or explore original free STL examples.
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