Uncooked quinoa contains 626 calories per cup, according to the U.S. Food and Drug Administration. This breaks down to 24 grams of protein, 10 grams of fat and 109 grams of carbohydrates. Because quinoa swells when cooked, a cup of cooked quinoa contains only 222 calories, according to Nutrition Data.
Nutrition Data points out that one cup of cooked quinoa contains 4 grams of fat, or 5 percent of the recommended daily allowance; none of this comes from saturated fat. A cup of quinoa has no cholesterol, and contains 5 grams of dietary fiber, which is 21 percent of the RDA. It also contains 3 percent of the RDA of calcium and 15 percent of the RDA of iron.