Mangoes are considered as a fruit rich in nutrients, their nutritional content changes according to the variety of mango and their degree of maturity. They are a good source of beta-carotene (which our body can use to synthesize vitamin A), provide significant amounts of vitamin C, are also a good source of potassium, magnesium and fiber. 100 grams (about one cup) contains: 65 calories 0.5 grams of protein 0.3 grams of fat 17 grams of carbohydrates 28 mg. vitamin C 4000 IU of vitamin A (precursors)