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BMR Formulas:
For Men: BMR = 66 + (6.23 × weight in lbs) + (12.7 × height in inches) - (6.8 × age in years)
For Women: BMR = 655 + (4.35 × weight in lbs) + (4.7 × height in inches) - (4.7 × age in years)
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Definition: This calculator estimates your Basal Metabolic Rate (BMR) - the number of calories your body needs at complete rest, using weight in pounds.
Purpose: It helps with weight management, diet planning, and understanding your body's energy needs.
The calculator uses the Mifflin-St Jeor Equations:
For Men: BMR = 66 + (6.23 × weight in lbs) + (12.7 × height in inches) - (6.8 × age in years)
For Women: BMR = 655 + (4.35 × weight in lbs) + (4.7 × height in inches) - (4.7 × age in years)
Explanation: These formulas account for gender differences in metabolism and calculate your resting energy expenditure.
Details: Knowing your BMR helps determine your daily caloric needs for weight maintenance, loss, or gain.
Tips: Enter your gender, weight in pounds, height in inches, and age in years. All values must be > 0.
Q1: What's the difference between BMR and TDEE?
A: BMR is calories burned at rest, while TDEE (Total Daily Energy Expenditure) includes activity and is typically 1.2-2.5× BMR.
Q2: Why does gender affect BMR?
A: Men generally have more muscle mass and less body fat, resulting in higher metabolic rates.
Q3: How accurate is this calculator?
A: It provides a good estimate but doesn't account for muscle mass, body composition, or medical conditions.
Q4: Should I use pounds or kilograms?
A: This calculator uses pounds, but kg can be converted to pounds by multiplying by 2.20462.
Q5: How often should I recalculate my BMR?
A: Recalculate after significant weight changes (10+ lbs) or annually as metabolism slows with age.