Calories in Kraft American Cheese 1 Slice. Find nutrition facts for Kraft American Cheese 1 Slice and over other foods in frogcitycheese.com's food. There are 60 calories in a 1 slice serving of Kraft American Cheese Slice. Get full nutrition facts for other Kraft products and all your other favorite brands. Feb 22, Calories and other nutrition information for American Cheese - 1 slice (1 oz) from USDA.