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SLDPRT STEP
Free online converter

Convert SLDPRT to STEP

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SLDPRT to STEP converterFREE
Drop a .SLDPRT 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 SLDPRT to STEP

  1. Add your .SLDPRT 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

  • STEP carries the final solid body only - the SOLIDWORKS feature tree, sketches, and parametric constraints are not included.
  • Choose STEP AP214 over AP203 when possible: AP214 retains color and layer information that AP203 drops.
  • The resulting .step file is typically larger than the .sldprt because geometry is stored explicitly rather than as construction history.

Frequently asked questions

Can I convert SLDPRT to STEP without a SOLIDWORKS license?
Yes. Autodesk Fusion 360's free personal tier imports .sldprt files and exports STEP. Our converter above also works without installing any software.
Will the STEP file keep my feature tree and design history?
No. STEP stores only the resulting solid - sketches, extrudes, fillets, and parametric constraints from SOLIDWORKS are not carried over.
Which STEP version should I use - AP203 or AP214?
AP214 is the better default because it carries color, layer, and name data; use AP203 only if the receiving software cannot read AP214.
Can the converted STEP file be opened in FreeCAD, Onshape, or Inventor?
Yes. STEP is the universal interchange format for solid geometry and is supported by virtually all professional CAD tools.
Learn about the formats: .SLDPRT · .STEP
Programs that convert SLDPRT: SolidWorks · Autodesk Inventor · CrossManager · 3ds Max (3D Studio Max) · Alibre Design Professional · TransMagic · EnSuite · 3D-Tool