Nutrition data and methodology
The calorie and macronutrient reference uses standard USDA FoodData Central values for raw apple with skin: approximately 52 kcal per 100 g.
A representative medium apple is shown at about 182 g edible weight, or roughly 95 calories. Individual varieties can be smaller or larger; Health Canada, for example, lists medium edible weights from about 167 g for Granny Smith to 212 g for Red Delicious.
USDA Foundation Foods includes separate records for major apple varieties such as Fuji, Gala, Granny Smith, Honeycrisp and Red Delicious, which is why this page treats whole-apple calories as an estimate rather than one universal number.