The number of calories in an apple varies based on its size and whether it has skin. According to the USDA's FoodData Central, an apple with skin and a three-inch diameter has about 95 calories.

When it comes to calories, apples are a low-figure option. There are 77 calories in a medium (150g) apple. But, of course, there’s a calorie difference between small, medium, and large apples.

Apples have 95 calories, 4 grams of fiber and 11 percent of the daily recommendation for vitamin C. Learn more health benefits of the fruit plus apple recipes.

Apple Nutrition Facts. There is some variety in the nutritional benefits of different apples. Some may be higher in sugar, for example, while others take first place for calcium content.