DWG IGS
Free online converter

Convert DWG to IGS

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DWG to IGS converterFREE
Drop a .DWG file here
or pick one - we convert it to .IGS 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 DWG to IGS

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

What to expect

  • Geometry transfers as CAD surfaces and curves, not a mesh, but layers, blocks and annotations are dropped.
  • As an older standard, IGS may export solids as trimmed surfaces, which can leave small gaps to repair in the target CAD tool.
  • A 2D-only DWG produces wireframe curves rather than solid bodies.

Frequently asked questions

Is IGS the same as IGES here?
Yes. .igs and .iges are the same IGES format, a neutral ASCII CAD standard. The conversion stores surfaces and wireframe curves, so geometry transfers as editable CAD data rather than a mesh.
Why convert DWG to IGS?
IGS is a vendor-neutral format for moving part geometry between CAD systems, while DWG is specific to AutoCAD. Converting lets other CAD programs read the model.
What does a 2D DWG become?
A flat 2D drawing exports as wireframe curves rather than solids. AutoCAD layers, blocks, dimensions and text are not carried into IGS.
Where does an IGS file open?
It opens free in FreeCAD, CAD Assistant, or the Autodesk Viewer online. For 3D printing, convert to STL first.
Learn about the formats: .DWG · .IGS
Programs that convert DWG: SolidWorks · AutoCAD · ACE 3000 · Argon · CrossManager · IronCAD · MEDUSA4 · VectorWorks