Converting Lotus Notes NSF files to Outlook PST can be done using specialized software like eSoftTools NSF to PST Converter. First, install the tool and open it on your system. Load the NSF files you want to convert, and the tool will scan and display all the emails and folders. Next, choose the specific data you want to export and select PST as the output format. Start the conversion process, and once done, your Lotus Notes data will be converted to PST format. Finally, import the PST file into Outlook to access all your emails and attachments.