BMR Calculator

Calculate your Basal Metabolic Rate — the calories your body burns at rest — using two established scientific equations.

💤 BMR Calculator

Basal Metabolic Rate

Mifflin-St Jeor1,618 kcal/day
Harris-Benedict1,672 kcal/day

💡 BMR Equations Explained

Mifflin-St Jeor (1990): Men: 10×weight + 6.25×height − 5×age + 5. Women: 10×weight + 6.25×height − 5×age − 161. This is the most accurate equation for most adults.

Harris-Benedict (revised 1984) gives slightly different results. Both are widely used. If results differ significantly, the Mifflin-St Jeor value is generally preferred.

30-year-old male, 70 kg, 170 cm: Mifflin-St Jeor BMR = 1,596 kcal/day. Harris-Benedict = 1,668 kcal/day.

BMR Calculator FAQ

🔗 Related Calculators

TDEE CalculatorCalculate your Total Daily Energy Expenditure (TDEE) using the Mifflin-St Jeor equation. See BMR and calories burned at each activity level.RMR CalculatorCalculate your Resting Metabolic Rate — the calories you burn at rest including minimal daily movement. Slightly higher than BMR.Mifflin St. Jeor CalculatorCalculate your BMR using the Mifflin-St Jeor equation — the most accurate BMR formula for most adults. See daily calorie needs at all activity levels.Calorie CalculatorCalculate how many calories you need per day to maintain, lose, or gain weight based on age, gender, height, weight, and activity level.