New Health Guide states that a small orange of 100 grams has 11-12 grams of carbohydrates, and 9 grams come from sugar. A medium orange has 15 grams of carbohydrates, with 12 grams from sugar; and, a large orange has 22 grams of carbohydrate, with 17 grams from sugar.
A medium orange of 131 grams contains 12.5 percent of the recommended daily value of fiber, or about 3 grams; the recommended daily value for fiber is 25 grams. Fiber is a carbohydrate that the body cannot break down for energy use, but it is important to maintain one's health. According to the World's Healthiest Foods, oranges contain a high percentage of fiber per calorie, making them a healthy food choice to include in one's daily intake.