I'd do outlook CSV.
Then open in Google Sheets (or open in Excel and select all and C/P to Google Sheets.
In Google Sheets make a Find and Replace from 1\d{10} to $1
Then save back as CSV and import in Google (delete first all the contacts there).
d stands for digits? While 10 being 10 digits?
Wonder if I could do the same thing by adding a +(plus) and a 1 in front of all my phone numbers in my contacts, would make it a lot eaiser to place phone calls while using Google hangouts or Google Voice( as all u.s. and Canadian numbers need to have the plus sign and the number one before dialing.)
If it doesn't have a plus and and a 1 in front of the number I have to remember the 10 digit number and plug it in manually to call.
What coding would I use to change all my numbers to a 1 and+? Thanks