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Harris-Benedict Equation:
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The Harris-Benedict equation estimates Basal Metabolic Rate (BMR), which is the number of calories your body needs to perform basic life-sustaining functions at rest. It provides a foundation for determining daily caloric needs based on individual characteristics.
The calculator uses the Harris-Benedict equation for men:
Where:
Explanation: The equation calculates the basal metabolic rate based on weight, height, and age, providing an estimate of daily calorie needs at complete rest.
Details: Accurate BMR estimation is crucial for weight management, diet planning, and understanding individual metabolic needs. It serves as the foundation for calculating Total Daily Energy Expenditure (TDEE) when combined with activity level.
Tips: Enter weight in kilograms, height in centimeters, and age in years. All values must be valid positive numbers. Select gender (currently using male equation).
Q1: What is the difference between BMR and RMR?
A: BMR (Basal Metabolic Rate) measures calories burned at complete rest, while RMR (Resting Metabolic Rate) measures calories burned at rest but may include minimal activity. BMR is typically slightly lower than RMR.
Q2: How accurate is the Harris-Benedict equation?
A: The equation provides a good estimate for most people, but individual variations in metabolism can cause differences of ±10-15% from actual BMR.
Q3: Why are there different equations for men and women?
A: Men and women have different body compositions and metabolic rates. Men typically have more muscle mass and higher metabolic rates than women of the same weight and height.
Q4: How often should I recalculate my BMR?
A: You should recalculate your BMR whenever there are significant changes in your weight, body composition, or age (typically every few months or after major weight changes).
Q5: Can BMR change over time?
A: Yes, BMR can change due to factors such as aging, changes in muscle mass, weight loss or gain, and hormonal changes.