It depends on the appetites of three people. If three girls eat less, generally about 250 grams is enough, if three boys eat more, it needs about 500 grams. All rice cookers have their own measuring cups. A measuring cup is usually 150g rice, and 150g rice is cooked into rice. If you put it in a common rice bowl at home, that is, a bowl with a capacity of about 400ml, you can hold a little more 1 bowl.