Dr. Martens size US 6 fits size 6 (euro 5).

Love these boots! They are European so the UK size is 3 and the US is size 5. I am a true 6 and they fit me like a glove, perfect with light to medium weight socks. They are not tight in the instep like some doc's are and which kill my feet. They are really comfortable to wear. I love them but I just don't know what to wear them with. Worn a couple of times in excellent condition with original box.