According to Self NutritionData, one medium-sized apple weighing 182 grams or measuring approximately 3 inches in diameter contains 25 grams of carbohydrates. These carbohydrates account for 8 percent of an average person's daily carbohydrate allowance.
A medium-sized apple has a significant amount of carbohydrates and is comprised of mostly sugars. It supplies 21 percent of the recommended daily nutritional requirements for fiber and 17 percent of the recommended daily nutritional requirements for vitamin C. Apples are also low in saturated fat, cholesterol, and sodium. Self NutritionData notes that apples have a high level of sugar and should be consumed minimally for a well-balanced diet.