BMR Calculator
Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) to understand your daily calorie needs.
Calculate Your BMR
Your BMR Results
Enter your information to calculate your BMR
Understanding Basal Metabolic Rate (BMR)
BMR is the amount of energy needed while resting in a temperate environment when the digestive system is inactive. It represents the energy required to maintain vital organs and accounts for 60-70% of your total daily energy expenditure.
BMR Calculation Formulas
Mifflin-St Jeor
Most accurate for general population
Revised Harris-Benedict
Classic formula, slightly less accurate
Katch-McArdle
Most accurate for lean individuals with known body fat %
Factors Affecting BMR
Muscle Mass
More muscle mass increases BMR. Strength training can boost your metabolism by building lean muscle tissue.
Age
BMR decreases with age, typically 1-2% per decade after age 20 due to muscle loss and metabolic changes.
Genetics
Hereditary traits influence BMR. Some people naturally have higher or lower metabolic rates.
Diet & Lifestyle
Regular meals, adequate sleep, and stress management can help maintain optimal BMR.
BMR vs RMR
Basal Metabolic Rate (BMR)
- • Measured under strict conditions
- • Complete rest and fasting required
- • Most accurate but difficult to measure
- • Used in clinical settings
Resting Metabolic Rate (RMR)
- • Measured under relaxed conditions
- • No fasting required
- • Easier to measure accurately
- • More practical for daily use
Important Note: BMR calculations are estimates based on statistical data. Individual variations can be significant due to factors like genetics, muscle mass, and metabolic efficiency. For the most accurate assessment, consider consulting with a healthcare professional or using specialized metabolic testing equipment.
