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Mifflin BMR Equation:
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The Mifflin-St Jeor equation is a widely used formula to estimate Basal Metabolic Rate (BMR), which represents the number of calories your body needs at rest to maintain basic physiological functions.
The calculator uses the Mifflin BMR equation:
Where:
Explanation: This equation provides an estimate of the calories your body burns at complete rest to maintain vital functions like breathing, circulation, and cell production.
Details: Knowing your BMR is essential for creating effective weight management plans, determining daily caloric needs, and establishing appropriate nutrition goals for health and fitness.
Tips: Enter your weight in kilograms, height in centimeters, and age in years. All values must be valid positive numbers for accurate calculation.
Q1: What is the difference between BMR and RMR?
A: BMR (Basal Metabolic Rate) measures energy expenditure at complete rest, while RMR (Resting Metabolic Rate) measures energy expenditure at rest but may include minimal activity.
Q2: How accurate is the Mifflin equation?
A: The Mifflin-St Jeor equation is considered one of the most accurate BMR prediction formulas, with an accuracy of about ±10% for most populations.
Q3: Why is there a constant of -161 in the equation?
A: The constant accounts for the average metabolic differences and helps calibrate the equation to provide more accurate results across different individuals.
Q4: Should I measure my weight and height at a specific time?
A: For most consistent results, measure your weight in the morning after using the bathroom and before eating or drinking. Height should be measured without shoes.
Q5: How often should I recalculate my BMR?
A: Recalculate your BMR whenever there are significant changes in your weight (5+ kg), or annually as part of your health assessment routine.