There are two ways to convert the vCard file to NSF format. One is manual and the other is professional; however, the manual method is a bit lengthy and the chances of data corruption are high. For this, you can use a professional converter in the second way; I advise you to use WholeClear VCF to NSF Converter. Because I have also used this professional tool, which is considered a very easy and reliable tool to use. It can transfer files without any errors and data loss. Windows OS, Windows XP, Windows 8.1, Windows 7, Windows Vista, Windows 11, Windows 10, etc., can all be used with this application. It can easily convert vCard versions 2.1, 3.0, 4.0, and other versions to Lotus Notes (NSF) format for all editions like 10.0, 9.0, 8.5, 8.0, 7.0, 6.0, and other versions. The best part is that it is free from all types of viruses and can export files of any size irrespective of the size or number of files. You can download the demo version to export some VCF contacts to NSF file format for free.