Windows tool to convert spreadsheet-based contact lists into VCF files?

If you want an offline Windows utility that reliably converts spreadsheet contacts into VCF , look for a dedicated Excel to vCard Converter rather than generic file converters. These tools let you map each Excel column (first name, mobile number, email, etc.) to proper contact fields before export. A well-known option in this category is Softaken Excel to vCard Converter — a desktop tool you install on Windows that works without internet access and saves contacts in phone-compatible VCF format. That keeps your contact export local and secure.