Question: how many calories in a mcdonald's double big mac?
Answer: The "Double Big Mac" weighs in at 720 calories, 43 grams of fat, 46 grams of carbohydrates, and 38 grams of protein. For comparison, the "Big Mac" has 540 calories, 30 grams of fat, 45 grams of carbohydrates, and 24 grams of protein.