Do I need SolidWorks installed?

No. Upload your .sldprt or .sldasm and convert it to STEP online — no SolidWorks license required.

Are assemblies supported?

Yes. Both parts (.sldprt) and assemblies (.sldasm) can be converted to STEP with structure preserved.

Is the STEP editable in other CAD?

Yes. STEP provides precise B-rep solids that most CAD systems can import and edit, though the feature history is not transferred.

SolidWorks to STEP中文

SolidWorks to STEP Converter Online

Convert SolidWorks (.sldprt / .sldasm) into STEP (.step / .stp), the universal neutral format for cross-CAD exchange, supplier handoff and long-term archiving. Done online in WO3D — no SolidWorks license required.

Convert Now All Converters

Universal exchange

STEP is accepted by virtually every CAD system, so partners can open your design.

Keeps solids

STEP preserves precise B-rep solids and assembly structure for engineering reuse.

No SolidWorks license

No Dassault SolidWorks needed — upload your part or assembly in the browser.

When to use it

When you must share a SolidWorks model with a supplier, client or partner on a different CAD system, STEP is the safest neutral handoff.

For long-term archiving and procurement, STEP is more durable than a version-locked native SolidWorks file.

What is preserved

STEP carries solid geometry and assembly structure, but not the SolidWorks feature tree or parametric history.

Recipients get editable B-rep geometry, not your design intent timeline.

When to choose IGES

Only convert to IGES if a legacy system specifically requires it.

For modern collaboration STEP is the better default.