Yes, credit card companies automatically convert foreign currencies to the domestic currency using their exchange rate.
People Also Ask
While credit cards are accepted in most situations, currency can be more convenient for public transportation and small vendors. It's also wise to carry an emergency fund with enough cash for a few days, just in case your card gets lost or stolen.
Definitely use credit cards as much as possible. You don't need to bring any cash. You might want to get 100 Euro from an ATM at the airport when you arrive in Italy and hit ATMs as needed throughout you trip. Consider getting larger sums to avoid the (roughly) $2 ATM fee everytime you use an ATM.
If you ask locals “Do you tip in Italy?”, they'll explain that while they sometimes leave a small tip, it's generally not necessary. In Italy, gratuity (or una mancia, pronounced oo-nah MAN-chah) is considered a bonus for exceptional service. And it's not often that you'll find a tip jar at a register.