Question: how many calories are in a mcdonald's little mac?
Answer: The "Little Mac" will have 320 calories, 17 grams of fat, 27 grams of carbs, and 15 grams of protein. The "Double Big Mac" weighs in at 720 calories, 43 grams of fat, 46 grams of carbohydrates, and 38 grams of protein.