How to convert STP to IGES
- Add your .STP file - drop it in the box above or click to browse.
- Convert it to .IGES in a few seconds.
- Download your new .IGES file.
What to expect
- Both formats are precise neutral CAD (not meshes), so geometry stays exact rather than faceted.
- IGES is older and surface-based, so solids may become trimmed surfaces and can need healing to be watertight again.
- Assembly structure and product metadata may be simplified compared with the STEP source.
Frequently asked questions
Does STP to IGES keep the exact geometry?
Both STEP and IGES are neutral CAD formats that carry precise geometry rather than meshes, so curves and surfaces are preserved as exact math, not facets. However, IGES is older and surface-oriented, so solid topology may be represented as trimmed surfaces and some assembly structure can be simplified.
Why convert STP to IGES?
Some older CAD or CAM systems accept IGES but not the newer STEP format, so IGES is used for compatibility with legacy tools. Both are text-based ISO-related neutral exchange formats.
What opens an IGES file?
Free options include FreeCAD and many CAD viewers; most professional CAD packages import IGES directly. It is a widely supported interchange format across CAD software.
What might be lost?
STEP's clean solid and assembly definitions can degrade into loose surfaces in IGES, sometimes leaving gaps that need healing before the model is watertight. Product metadata and structured assembly relationships may not carry over fully.
Programs that convert STP: AutoCAD · SolidWorks · 3D Object Converter · Argon · Creo Parametric · CrossManager · IronCAD · 3ds Max (3D Studio Max)
