How many Kcals are in fat? Understanding the energy density
                                
                                
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                                    4 min read                                
                            
                                A single gram of dietary fat contains roughly 9 kilocalories (Kcals), making it the most energy-dense of the three main macronutrients. This high energy concentration is why understanding how many Kcals are in fat is crucial for managing weight and balancing energy intake.