For a regular Big Mac, nothing added or removed, it’s actually about 540 calories. Only problem is that 260 of those calories are from FAT!! Honestly though, it has less calories in it than some of the other larger burgers on the menu like the Double Quarter Pounder with Cheese, the 1/3 pound Angus Burgers or even the Crispy chicken club sandwich!! So, in comparison, the Big Mac? Not so big anymore!