How to convert IGES to STEP
- Add your .IGES file - drop it in the box above or click to browse.
- Convert it to .STEP in a few seconds.
- Download your new .STEP file.
What to expect
- Geometry is kept as exact B-rep, not tessellated, so no faceting is introduced.
- If the IGES defines only surfaces rather than a closed solid, the STEP inherits that; gaps in the source do not heal automatically.
- STEP is plain-text neutral CAD; both formats are geometry-focused and carry no rendering materials or textures.
Frequently asked questions
Is this an exact-geometry conversion?
Yes. Both IGES and STEP store precise boundary-representation geometry, so the exact surfaces and solids are translated without being meshed into triangles.
Why convert IGES to STEP?
STEP (ISO 10303) is the modern neutral CAD standard, with broader and more reliable support than the older IGES. Converting improves interoperability with current CAD tools.
Where does a STEP open?
Free in FreeCAD, CAD Assistant, or the Autodesk Viewer online, plus virtually every professional CAD program.
What is lost?
IGES often stores loose surfaces rather than a sealed solid. If the source surfaces do not form a watertight body, the STEP may remain a surface model rather than a solid.
Programs that convert IGES: SolidWorks · Autodesk Inventor · Argon · AutoCAD · CrossManager · 3ds Max (3D Studio Max) · Alibre Design Professional · Autoconverter
