Katch McArdle Method: The Katch McArdle equation estimates BMR by considering lean body mass, providing a more accurate result for those with different body compositions.

Harris-Benedict Method: The Harris-Benedict equation estimates BMR based on weight, height, age, and gender, offering a general estimation of resting energy expenditure.

Mifflin St. Jeor Method: Similar to Harris-Benedict but considered more accurate, this equation estimates BMR based on weight, height, age, and gender.

Alan Aragon's Equation (Advanced Mode): Alan Aragon's equation is a more customized formula suitable for athletes and those seeking advanced accuracy in calculating macronutrients.