while bamforth is correct that beer is lower in carbs compared with, say, bread, it has lots more carbs than wine. a standard 5-ounce glass of wine contains just 1 or 2 grams of carbohydrates. a 12-ounce serving of a 5 percent-alcohol beer has between 10 and 20 grams of carbs -- or 40 to 80 extra calories.