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Mifflin-St Jeor Equation:
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Basal Metabolic Rate (BMR) is the number of calories your body needs to perform basic life-sustaining functions while at complete rest. It represents the minimum energy required to maintain vital functions such as breathing, circulation, and cell production.
The calculator uses the Mifflin-St Jeor equation:
Where:
Explanation: This equation provides the most accurate estimate of BMR for the general population and is widely used by health professionals.
Details: Knowing your BMR is essential for creating effective weight management plans. It helps determine your total daily energy expenditure when combined with activity level, allowing you to calculate appropriate calorie intake for weight loss, maintenance, or gain.
Tips: Enter your weight in kilograms, height in centimeters, and age in years. All values must be valid positive numbers. For accurate results, use your most recent measurements.
Q1: How accurate is the Mifflin-St Jeor equation?
A: It's considered one of the most accurate BMR equations for the general population, with an accuracy of about ±10% for most individuals.
Q2: What factors can affect my BMR?
A: BMR is influenced by age, gender, body composition, genetics, thyroid function, and environmental temperature. Muscle mass increases BMR while fat decreases it.
Q3: How often should I recalculate my BMR?
A: You should recalculate whenever you experience significant changes in weight, age, or body composition, typically every 3-6 months during weight loss journeys.
Q4: Can I use this for weight gain as well?
A: Yes, once you know your BMR, you can calculate your total daily energy needs and adjust calorie intake accordingly for weight gain, maintenance, or loss.
Q5: Is this equation suitable for everyone?
A: While accurate for most adults, it may be less accurate for extremely muscular individuals, those with very high body fat percentages, pregnant women, or people with certain medical conditions.