With IFC Exporter you can export any file (or parts of large files) that can be opened in Autodesk® Navisworks® to the IFC format (IFC2x3 or IFC4). When exported, Navisworks model items can be mapped to corresponding IFC objects. This plugin will export both the model geometry and the related data (Property Sets).

The plugin functions in 2 different ways.The straightforward way is to select model items (selection) that you want to export from the Navisworks model and export them without mapping objects. If using this way, all entities in the IFC file are represented as IfcEquipmentElement. The second way is to use object mapping. For this, you need to create a predefined selection or search sets for each different object type in the Navisworks model and tell the plugin which IfcType to use when exporting them.

Prerequisite: 

Autodesk Construction Cloud® functions require Microsoft WebView2 runtime to be installed. Link: https://go.microsoft.com/fwlink/p/?LinkId=2124703

WebView2 runtime can also be found from the C:\Users\xxx\AppData\Roaming\Autodesk\ApplicationPlugins\Codemill.IFCExporter.bundle\Contents\WebView2 - folder after application installation