A small green apple has approximately 52 calories, while a large green apple can have up to 116 calories. Because of the nutritional value of green apples eaten with the skin, these calories are considered healthy calories.
Some of the nutrients in green apples include dietary fiber, calcium, vitamin C, iron and potassium. Green apples contain less than 1 gram of fat per apple, regardless of the size. Applesauce and apple juice are good alternatives to fresh apples, but you must check the caloric content on the package; sweeteners usually add at least 15 calories to the food if only 1 teaspoon of sugar is used.