I was trying to find a way to import multiple VCF/CSV contacts to Google Contacts in one shot, instead of adding one by one.
Combining Multiple .VCF or .CSV Files for Importing
Unfortunately, there isn’t any batch import for vcf and csv contacts in Gmail. A workaround for this is to take all your vCard or exported contact files and combine them into a single file and then upload that one master file.
Steps for Windows
Step 1: Launch a command prompt by Clicking the Start button and typing Cmd and pressing Enter.
Step 2: Go to the directory where your exported contacts are located.
Step 3: Type:
COPY *.csv combinedfile.csv
and Press Enter. Or, if you’re combining .vcf files, type
COPY *.vcf combinedfile.vcf
Step 4: Next steps are pretty straightforward, go to contacts, click on More -> Import, and select the appropriate option. Upload the file and you are done!
Combining Exported Contacts in OS X
To perform this same task in OS X, launch Terminal, go to the directory that has your exported contacts and type:
fmt -sp *.vcf > combinedfile.vcf
fmt -sp *.csv > combinedfile.csv