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Mifflin-St Jeor Equation:
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The Mifflin-St Jeor equation is currently considered the most accurate method for calculating Basal Metabolic Rate (BMR). It estimates the number of calories your body needs to perform basic life-sustaining functions at complete rest.
The calculator uses the Mifflin-St Jeor equation:
Where:
Explanation: This equation accounts for the fundamental metabolic differences between men and women and provides a more accurate BMR estimation than older formulas.
Details: Knowing your BMR is essential for creating effective weight management plans, whether for weight loss, maintenance, or gain. It forms the foundation for calculating your Total Daily Energy Expenditure (TDEE).
Tips: Enter your weight in kilograms, height in centimeters, age in years, and select your gender. For accurate results, use precise measurements and ensure all values are valid.
Q1: Why is Mifflin-St Jeor considered the best BMR equation?
A: Research shows it's more accurate than older equations like Harris-Benedict, especially for obese and non-obese individuals across various age groups.
Q2: How often should I recalculate my BMR?
A: Recalculate whenever your weight changes significantly (5+ kg) or annually as you age, since BMR decreases with age.
Q3: Does muscle mass affect BMR?
A: Yes, muscle tissue burns more calories at rest than fat tissue. Individuals with more muscle mass typically have a higher BMR.
Q4: Can medical conditions affect BMR?
A: Yes, thyroid disorders, fever, stress, and certain medications can significantly increase or decrease your metabolic rate.
Q5: How accurate is this calculation for athletes?
A: While generally accurate, extremely muscular athletes may find their actual BMR is higher due to increased lean body mass.