The Calories in Kefir are burned to produce energy in our body. If this calorie content exceeds the required amount then, it gets stored as Fats. So, it is essential to know the Kefir Calories. If you were to ask "How many calories are present in Kefir?", then the answer would be Kefir contains 41.00 Kcal calories per 100g of its quantity. The energy that we gain from Calories in Kefir is not just these calories but also from other nutrients like Proteins, Carbohydrates, Fats. The Proteins and Carbs present in Kefir provide about 4 cal per gram whereas Fats render 9 cal per gram. To get a better understanding of the calories that you gain from other dairy products, checkout Dairy Products.