These also come in different varieties. The calorie content in each mango differs from the other based on its shape, size and kind. One ounce of Mango has 18 calories, 1 cup of fresh sliced mango contains 107 calories and a large whole mango with skin has 135 calories.Similarly different sizes of Mangoes contain different calorie contents. The calorie content also differs in different kinds of Mango preparations.angos are a good source of potassium, Vitamin A and C. A medium sized mango gives around 20% of the suggested daily Vitamin C content. It also has high Vitamin B content especially Vitamin B6. Mangoes are also rich in fiber; there is 4 gram of fiber in one Mango.