A 1-cup serving of cooked white rice contains roughly 200 calories, 0.4 grams of fat and 4 grams of protein. White rice contains 35 to 40 grams of carbohydrates per serving. Nutrition data may vary slightly among different varieties of rice.
White rice is composed of 90 percent carbohydrates. A cup of white rice contains approximately 15 percent of an average individual's daily recommended intake of carbohydrates. Most white rice contains less than 1 gram of dietary fiber and a very small amount of sodium. Nutrients such as iron and potassium may be found in small amounts in white rice.