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Mifflin-St Jeor Equation:
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The Mifflin-St Jeor equation is a widely used formula for estimating resting energy expenditure (REE), which represents the number of calories your body needs at complete rest to maintain basic physiological functions.
The calculator uses the Mifflin-St Jeor equation:
Where:
Explanation: This equation provides a more accurate estimate of resting metabolic rate compared to older formulas, especially for obese individuals.
Details: Accurate REE estimation is crucial for developing personalized nutrition plans, weight management programs, and determining appropriate caloric intake for various health conditions.
Tips: Enter weight in kilograms, height in centimeters, age in years, and select gender. All values must be valid (weight > 0, height > 0, age between 1-120).
Q1: What is the difference between REE and BMR?
A: REE (Resting Energy Expenditure) and BMR (Basal Metabolic Rate) are often used interchangeably, but BMR is measured under more strict conditions while REE is slightly higher and more practical for clinical use.
Q2: How accurate is the Mifflin-St Jeor equation?
A: It's considered one of the most accurate predictive equations, with about 90% accuracy in estimating REE for most populations.
Q3: Should I use this for weight loss planning?
A: Yes, this provides your baseline caloric needs. For weight loss, you would typically subtract 500-1000 calories from your total daily energy expenditure.
Q4: Are there limitations to this equation?
A: The equation may be less accurate for extremely muscular individuals, elderly populations, and those with certain medical conditions affecting metabolism.
Q5: How often should REE be recalculated?
A: REE should be recalculated with significant changes in weight (≥5 kg) or every 6-12 months as part of routine health assessment.