Each half of an avocado contains 161 calories, 2 grams of protein, 9 grams of carbohydrates and 15 grams of fat, including only 2 grams of saturated fat. The rest of the fat in avocados is heart-healthy unsaturated fat. However, this is still 23 percent of the recommended total fat and 10 percent of the recommended saturated fat per day for a person following a 2,000-calorie diet. The carbohydrates in avocados include 6.7 grams of fiber, which is 27 percent of the daily value, including a significant amount of soluble fiber, which can help lower cholesterol