American cheese Swiss cheese Cheddar cheese; Calories: 102: 111: 114: Fat: 9 grams: 9 grams: 9 grams: Saturated fat: 5 ... just a single slice of American cheese provides 20% of the recommended ...

Adding to the confusion, not all cheese slices out there are legitimate American cheese. Only slices that contain more than 51 percent real cheese can be legally classified as American cheese.