How many stamps would I need to send a letter from SC to London?

Question

It's a standard 1 oz letter.

Also, could I just put the stamps on and put it in my mailbox? I can't go to the post office.

Sorry if it's dumb, I'm 13. I've never mailed a letter outside my state before. ^_^;;

Sorry, I didn't know what category to put it in.

Answer 1

You  may have to take it to the post office so they can weigh it just to be sure.