How many carbs are in an avocado?

One serving, or a 1/2 cup of avocado contains 1 gram of net carbs, as well as 5 grams of fiber. A whole California avocado, which averages around 5 ounces in weight, contains 3 grams of net carbs and 9 grams of fiber.

The larger Florida avocado, which averages around 11 ounces per avocado, contains about 7 grams of net carbs and 17 grams of fiber. Net carbs are carbs that are available to the body for energy use. While fiber is a type of carbohydrate, it passes through the body and therefore is not included in the total of net carbs when calculating carbs for a low-carbohydrate diet.