How many calories are there in one gram of fat?

One gram of fat contains 9 calories. This value is based on the energy density of macronutrients; fat is the most calorically dense of the three main macronutrients (carbohydrates and proteins). It is important to understand that each gram of carbohydrate and protein has a lower calorie count—4 calories per gram—highlighting the significant energy potential of fats. This understanding is crucial for both dietary planning and nutrition education, especially for those looking to manage weight or optimize athletic performance. Recognizing the caloric content of fat allows individuals to make informed choices about their dietary intake and overall health.