Out with my mates - Tradução em português

Last night I went out with my mates, we had a fantastic time.

Mates = a good friend. Mostly used in British and Australian English. It is commonly used for both male and female friends.

I realised talking to friend last night that if you study American English you probably have not come across this expression.

(I think Americans use "pals or buddies" but I am not sure).