McDonald's offers two types of coffee drinks: hot or frozen. The number of calories in the coffee drinks depends on how much cream, sugar and other additives you put in them, according to McDonalds.com.
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McDonald's regular and decaffeinated coffees contain no calories, according to CalorieKing.com. Without any added milk, cream or sugar, they contain no carbohydrates, fats or proteins.
McDonald's frozen drinks can contain as many calories as a hamburger. A 16-oz. iced mocha with whipped cream, chocolate syrup and milk contains about 310 calories, 13 g of fat, 42 g of carbohydrates and 7 g of protein, according to McDonalds.com. A same size caramel frappe contains 550 calories, 24 g of fat, 76 g of carbohydrates and 8 g of protein.
You can reduce the number of calories in your coffee drinks by reducing or eliminating the amount of sugar, cream and milk you put in. One tbsp. of whipping cream has 52 calories, while 1 tbsp. of sugar has 49 calories. Your best choice for reducing calories would be to use fat-free milk, which has 5 calories per tbsp.