Question: how many calories in one 6 ounce glass of red wine?
Answer: PAY ATTENTION TO ALCOHOL CONTENT That's because a gram of alcohol has 7 calories compared to a gram of carbohydrate (sugar), which has 4 calories. So a six-ounce glass of wine that has an ABV of 15% has about 144 calories compared to a six-ounce glass of wine that has an ABV of 12%, which has about 115 calories.