Question: how many calories in an 8 ounce glass of red wine?
Answer: Nutrition Information of Red Wine Sweet red wines like port wine contain 90 calories per two-ounce serving. Calories in 8 oz red wine may very based on the sweetness of the wine. There are approximately 6.4 grams of carbs in red wine as well as 1.6 grams of sugar per eight-ounce serving.