BMR Calculator - Calculate Your Basal Metabolic Rate
Calculate your Basal Metabolic Rate - the calories your body burns at complete rest
Calculate Your BMR
Most accurate for modern populations
For informational purposes only. Does not constitute medical or nutritional advice. Consult a healthcare professional before use.
What is Basal Metabolic Rate (BMR)?
Your Basal Metabolic Rate (BMR) is the number of calories your body needs to perform essential, life-sustaining functions at complete rest. These functions include breathing, circulation, cell production, nutrient processing, protein synthesis, and ion transport.
What BMR Measures
- • Energy needed for basic bodily functions
- • Calories burned at complete rest
- • About 60-75% of total daily calories
- • Varies based on age, gender, weight, height
BMR vs TDEE
- • BMR = Calories at complete rest
- • TDEE = BMR × Activity Factor
- • TDEE includes exercise and daily movement
- • Use TDEE for weight planning, not BMR
BMR Calculation Formulas
Mifflin-St Jeor (Recommended)
Considered the most accurate for modern populations
Men: BMR = 10W + 6.25H - 5A + 5
Women: BMR = 10W + 6.25H - 5A - 161
W=weight(kg), H=height(cm), A=age
Harris-Benedict
Original 1919 formula, revised in 1984
Men: BMR = 88.362 + (13.397W) + (4.799H) - (5.677A)
Women: BMR = 447.593 + (9.247W) + (3.098H) - (4.330A)
W=weight(kg), H=height(cm), A=age