I got curious when I read your posts. So I research for you. Here it is: But in a head-to-head comparison, these two tubers are seemingly very similar. In a 100-gram portion, the white potato has 92 calories, 21 grams of carbs, 2.3 grams of dietary fiber, 2.3 g of protein and 17% of the recommended daily value of vitamin C. The same amount of sweet potato, on the other hand, has 90 calories, 21 grams of carbs, 3 grams of fiber, 2 grams of protein, 35% of the recommended daily value of vitamin C and 380% of the daily recommended value of vitamin A. Thanks!