How many grains of rice to feed a person for a day?

It takes 400 grams of rice to feed a person per day (for families, including children and adults). That is intended for two meals that include other ingredients to ensure a minimum of 2,100 kilocalories per day. There are about 48 grains of rice in a gram. Meaning it takes about 19,200 grains of rice to feed a person per day.