About 1 cup of cooked rice can be made from one-third cup of dried rice. Because there is a 2:1 ratio in how rice is cooked, most dried rice triples in size when it is cooked.
Different kinds of rice have different amounts and cooking times, but in general, one cup of dried rice makes between three and four cups of cooked rice. Medium-grain and short-grain rice tend to yield a little less than long-grain and whole-grain rice.
Follow the cooking directions on the package, or put the rice, water, salt, and butter in a saucepan. Get it to boil. Turn down the heat and cover. Most of the time, two-thirds cup of water is used for one-third cup of dried rice.