I had a similar problem when my phone exported thousands of contacts into a single VCF file. It was almost impossible to manage or search through them. A VCF to CSV Converter made things much easier because CSV files can be opened in Excel, Google Sheets, or even imported into email clients like Outlook and Yahoo. What I liked most about using an offline tool like Softaken VCF to CSV Converter is that it keeps all details intact -- phone numbers, names, email IDs and even addresses. Online tools either had file size limits or risked uploading private data. If you're managing business contacts, I'd say go for an offline converter.