The average calorie of 100g of milk is 57kcal. Milk is an everyday beverage that contains protein, fat, carbohydrates, calcium, phosphorus and other nutrients that provide nutrition and energy to the body. According to different fat content, milk is generally divided into whole milk, low-fat milk and skimmed milk, and different milk contains different calories. 1. Whole milk: the general fat content of about 3.7%, 100g of whole milk calories is 57 kcal, whole milk in the fat content is relatively high, but is not a high-fat food, and nutrients are richer, the taste is also better, suitable for growth and development and malnutrition of young people to drink. 2. Low-fat milk: the fat content is 1%-2%, 100g of low-fat milk is 47kcal, low-fat milk contains calories and fat content between full-fat and low-fat, suitable for most people to drink. 3. Skimmed milk: fat content of less than 0.5%, 100g of skimmed milk calories for 32 kcal, with low-fat, low-calorie, low-cholesterol advantages, but the fat content of the taste also has an impact on obesity, high cholesterol, atherosclerosis people can choose skimmed milk.