How many calories are there in a gram of fat?

A gram of fat contains 9 calories, which is a crucial piece of information for anyone studying nutrition or weight control. This value reflects the energy density of fats compared to carbohydrates and proteins, which contain 4 calories per gram. Fats are energy-rich macronutrients, providing more than double the calories per gram compared to the other two macronutrients. This high caloric content is an important consideration when managing weight, as consuming high amounts of fat can lead to an excess of calories, impacting weight control. Understanding this allows individuals to make informed dietary choices based on their energy needs and weight management goals.