how many carbs in one serving of blackberries?
<answer> There are 13.8 grams carbohydrates in one serving of blackberries. <context> Carb Count of Blackberries. A cup of blackberries contains 62 calories, 13.8 grams carbohydrates and 7.6 grams fiber, which corresponds to a net-carb content of only 6.2 grams, according to the USDA National Nutrient Database. If you have a half cup of the berries, the nutrition facts for this smaller serving are 31 calories, 6.9 grams carbohydrates and 3.8 grams fiber, for a total of only 3.1 grams of net carbs. If you have frozen blackberries, once thawed, the same volume contains a larger number of blackberries.