With only 90 calories, 0g sugars, and 0g carbs, Corona Hard Seltzer keeps the season bright and refreshing. Not a low calorie food. Per 12 fl. oz. serving average analysis: Calories 90, Carbs 0 grams, Protein 0 grams, Fat 0 grams. Under FDA regulations, carbohydrates of 0.5 g per serving or less are declared as zero.