There exists several programs that can help you in exporting of your contacts from CSV files to a vCard (*.vcf) format. vCard and VCF are the same file type, so you can rename the extensions freely as you need and see fit.
Convert Comma Separated Value to vCard file.
We found 3 software records in the database related to .csv to .vcard file format conversion.
Articles and other information relating to csv into vcard conversion:
Open VCF, split, merge or convert vCard file format - Comprehensive information about VCF file format, how to open, work, convert, split and merge the vCard files on Windows and Mac
Microsoft Windows software - convert csv to vcard on Windows
A simple CSV to vCard converter
Convert from csv file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned csv to vcard. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A free software for managing of latest Samsung mobile devices
Apple macOS / Mac OS X software - convert csv to vcard on OS X
Management and sync utility for Samsung mobile devices