Is Z pronounced zee or zed?

Pronunciation of the Letter Z

The letter Z is commonly referred to as zed (/ˈzɛd/) in British English, while in North American English, it is typically called zee (/ˈziː/). Additionally, there is a rare, archaic form known as izzard (/ˈɪzərd/). This information includes phonetic notations presented in the International Phonetic Alphabet (IPA).