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BMR Equation for Men:
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Basal Metabolic Rate (BMR) is the number of calories your body needs to maintain basic physiological functions at rest. It represents the minimum energy required to keep your body functioning, including breathing, circulation, and cell production.
The calculator uses the Mifflin-St Jeor equation for men:
Where:
Explanation: The equation accounts for the fact that metabolism decreases with age and is proportional to body size (weight and height).
Details: Knowing your BMR helps estimate daily calorie needs for weight maintenance, loss, or gain. It's the foundation for determining Total Daily Energy Expenditure (TDEE) when combined with activity level.
Tips: Enter weight in kg, height in cm, and age in years. For accurate results, measure weight in the morning after using the bathroom and before eating. Height should be measured without shoes.
Q1: How does BMR differ from TDEE?
A: BMR is calories burned at complete rest. TDEE (Total Daily Energy Expenditure) includes all daily activities and is calculated by multiplying BMR by an activity factor.
Q2: What are typical BMR values for men?
A: Average BMR for adult men ranges from 1,600-2,000 kcal/day, but varies significantly based on size, age, and body composition.
Q3: How accurate is this equation?
A: The Mifflin-St Jeor equation is about 90% accurate for most people. For very muscular or obese individuals, body composition testing may provide more accurate results.
Q4: Does muscle mass affect BMR?
A: Yes, muscle tissue burns more calories at rest than fat tissue. Two people of the same weight but different body compositions will have different BMRs.
Q5: How often should I recalculate my BMR?
A: Recalculate after significant weight changes (5+ kg) or annually as you age, since metabolism slows by about 1-2% per decade after age 20.