If you want to drink a glass of fresh orange juice, first, you need to decide if you’re going to drink concentrated or diluted juice. Perhaps you’re on a diet or want to cut down on sugar. I highly recommend diluting orange juice with water. 50/50 or less water would be a good ratio for dilution since orange juice isn’t as intense or acidic as many other citrus juices. To get 8 ounces of concentrated orange juice, you need about 4 medium-sized oranges. If you decide to dilute your juice 50/50, you’ll only need two oranges for a full 8-oz glass (1 cup).