How to convert 3DM to IGES
- Add your .3DM 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
- IGES carries only NURBS curves and surfaces - mesh objects, block definitions, layers, materials, and annotations are not included in the output.
- Trimmed surfaces can develop small gaps or open edges after import; run your target application's geometry heal or repair tool before using the model for machining.
- STEP (
.stp) is the preferred neutral format for modern CAD - choose IGES only when the receiving software specifically requires it.
Frequently asked questions
Can I convert 3DM to IGES without Rhino?
Yes - Autodesk Fusion 360 (free tier) imports
.3dm and exports IGES, and FreeCAD is a free open-source alternative. For large or complex models, Rhino gives the most predictable results.Will the IGES file open in SolidWorks, Creo, or Inventor?
Yes, all three import IGES. For complex trimmed solids, STEP typically causes fewer healing issues - use IGES only when the recipient specifically requests it.
Are `.igs` and `.iges` the same format?
Yes, both extensions refer to the same IGES format - choose whichever the receiving software expects.
Why does my imported IGES have open edges or gaps?
IGES export tolerances may not match the receiving application's import tolerance. Run the geometry repair or import diagnostics tool in your CAD software to close small gaps.
Programs that convert 3DM: 3D Object Converter · CrossManager · Autoconverter · PolyTrans|CAD+DCC · Vector CAD · EasySTONE · Autodesk Fusion 360
