SAT STEP
Free online converter

Convert SAT to STEP

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SAT to STEP converterFREE
Drop a .SAT file here
or pick one - we convert it to .STEP and give you the file to download

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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How to convert SAT to STEP

  1. Add your .SAT file - drop it in the box above or click to browse.
  2. Convert it to .STEP in a few seconds.
  3. Download your new .STEP file.

What to expect

  • Both SAT and STEP use exact boundary representation - no mesh approximation is involved, so solid geometry precision is fully preserved.
  • Colors, layer names, and assembly structure may not transfer depending on which tool performs the export; always inspect the result after converting.
  • SAT is version-sensitive; if your software rejects a .sat file with an ACIS version error, converting to STEP usually resolves it since STEP has no kernel-version dependency.

Frequently asked questions

Is SAT to STEP conversion lossless?
For solid geometry, yes - both formats use B-rep, so faces, edges, and surfaces transfer without approximation. Metadata such as colors or layer names may not carry over.
What is the difference between `.step` and `.stp`?
Nothing - they are the same ISO 10303 format; .stp is simply the older three-letter extension used for DOS compatibility.
My CAD software rejects my `.sat` file with a version error. Will converting to STEP fix it?
Usually yes. STEP has no kernel-version dependency, so sharing a .step file instead sidesteps ACIS version conflicts entirely.
Can I convert SAT to STEP without paying for software?
Yes - use the free converter above, or download CAD Assistant from Open Cascade, which is free with no account required.
Learn about the formats: .SAT · .STEP
Programs that convert SAT: SolidWorks · AutoCAD · CrossManager · ZEMAX · 3ds Max (3D Studio Max) · Alibre Design Professional · TransMagic · ViaCAD Pro