Calories In mildly sweet tea Calories: 41, Fat: 0g, Carbs: 11g, Protein: 0g, Fiber: 0g. Calories In sweet tea with tea and 1 c sugar/gallon Calories: 81, Fat: 0g, Carbs: 21g, Protein: 0g, Fiber: 0g. Calories In Melissa's Sweet Tea Calories: 116, Fat: 0g, Carbs: 30g, Protein: 0g, Fiber: 0g. Calories Burned For Hiking: climbing hills (carrying under 10 lb load)