Question: how many ounces in a large coke at mcdonald's?
Answer: That goes not only for the items on the menu, but also their sizes. In this BuzzFeed video, McDonald's drink sizes in the U.S.A. are compared to those of other international locations. In the U.S., a small equates to 16 ounces, a medium is 21 ounces, and a large is 30 ounces.