Convert STP to OFF Online
Convert STP to OFF in seconds. STP (STEP) is the 3-letter extension for the STEP CAD standard; OFF's strength is this: a plain, easy-to-parse mesh structure. No software installation required — everything runs in your browser.
Download Started!
How would you rate your experience with MiConvert?
Why Convert STP to OFF?
OFF is a simple research-origin polygon mesh format, built around geometry-processing research and academic mesh exchange. Converting from STP (STEP) — built around exact engineering geometry exchange between CAD systems and manufacturers instead — closes that gap.
OFF was built around geometry-processing research and academic mesh exchange, which is precisely the gap STP (STEP) leaves open, since it's designed around exact engineering geometry exchange between CAD systems and manufacturers instead.
STP (STEP) is the 3-letter extension for the STEP CAD standard, commonly used for exact engineering geometry exchange between CAD systems and manufacturers. That focus comes with a real limitation: not readable by mesh-only tools like slicers without conversion. OFF doesn't share that problem — its strength: a plain, easy-to-parse mesh structure.
How to Convert STP (STEP) to OFF
- Upload your STP file.
- MiConvert converts it to OFF, aiming to preserve what makes OFF useful: a plain, easy-to-parse mesh structure.
- Download the converted OFF file.
- Use it directly with geometry-processing research tools.
Key Conversion Features
- No local software installation required for either side — not SolidWorks, Fusion 360, Inventor, CATIA, not geometry-processing research tools — everything runs in the cloud
- Free for files up to 50MB, 100MB for registered accounts
- Keeps the parts of your file that matter for geometry-processing research and academic mesh exchange intact, even though the source was built for exact engineering geometry exchange between CAD systems and manufacturers
- Produces output ready for geometry-processing research tools, picking up right where SolidWorks, Fusion 360, Inventor, CATIA left off
- Purpose-built for the shift from exact engineering geometry exchange between CAD systems and manufacturers to geometry-processing research and academic mesh exchange, not a generic pass-through
Video Tutorial
Detailed guide on how to convert STP files to OFF quickly, for free, and without losing original quality. Perfect if you need to process file formats, reduce size, or upload files to systems that only
Frequently Asked Questions
What software works with the converted OFF file?
OFF is used by geometry-processing research tools. If you were working with SolidWorks, Fusion 360, Inventor, CATIA (which produces STP (STEP)), this conversion is the direct bridge between the two.
Will I lose anything converting STP to OFF?
Converting to OFF means adapting to a real constraint: minimal — no materials, textures, or color support. Anything STP (STEP) carries — built as it is for exact engineering geometry exchange between CAD systems and manufacturers — that has no equivalent there won't make the trip, but the core content converts faithfully.
Is OFF objectively better than STP?
Not objectively — OFF is better specifically for geometry-processing research and academic mesh exchange. For exact engineering geometry exchange between CAD systems and manufacturers, STP (STEP) is still the right tool; that's exactly why both formats exist.
Do I need SolidWorks, Fusion 360, Inventor, CATIA installed to convert my file?
No — the conversion happens entirely on our servers. You don't need SolidWorks, Fusion 360, Inventor, CATIA, and you don't need geometry-processing research tools either unless you plan to open or edit the OFF result afterward.
What happens to features specific to STP that OFF doesn't have?
STP (STEP)'s real strength — true B-rep geometry — exact surfaces and curves, not an approximation — has no equivalent once converted, since OFF's constraint is: minimal — no materials, textures, or color support.