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RMR Equation:
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The RMR (Resting Metabolic Rate) equation estimates the number of calories your body burns at rest. It's based on the Mifflin-St Jeor equation, which is considered one of the most accurate formulas for calculating basal metabolic rate (BMR).
The calculator uses the RMR equation:
Where:
Explanation: The equation accounts for basic metabolic needs based on body size, age, and gender differences in metabolism.
Details: Accurate RMR estimation is crucial for determining daily caloric needs, creating effective weight management plans, and establishing appropriate nutrition goals for health and fitness.
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's the difference between RMR and BMR?
A: RMR (Resting Metabolic Rate) and BMR (Basal Metabolic Rate) are often used interchangeably, but BMR is measured under more strict conditions while RMR is measured under less restrictive conditions.
Q2: How accurate is this RMR calculation?
A: The Mifflin-St Jeor equation is considered one of the most accurate formulas, with about 90% accuracy for most populations when compared to laboratory measurements.
Q3: Why do men and women have different formulas?
A: Men typically have more muscle mass and less body fat than women of the same weight, which results in a higher metabolic rate.
Q4: How often should I recalculate my RMR?
A: You should recalculate your RMR whenever your weight changes significantly (5+ kg) or at least every 6 months as metabolism can change with age and lifestyle.
Q5: Can this calculator be used for weight loss planning?
A: Yes, knowing your RMR is the first step in creating a calorie deficit for weight loss. Most weight loss programs recommend reducing daily intake by 500-1000 calories below your total daily energy expenditure.