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BMR Calculator

Calculate your Basal Metabolic Rate - the calories your body burns at rest

Calculate Your BMR

Gender:

Age:

years

Height:

Weight:

Your BMR Results

0 calories/day

This is the number of calories your body burns at complete rest

Energy Breakdown

Brain & Nervous System ~20%

Heart & Circulation ~15%

Liver & Kidneys ~27%

Muscle Maintenance ~18%

Other Functions ~20%

Daily Calorie Needs (TDEE)

Multiply your BMR by activity level to get total daily energy expenditure:

Sedentary ×1.2

Little to no exercise

0 cal/day

Light Activity ×1.375

Light exercise 1-3 days/week

0 cal/day

Moderate Activity ×1.55

Moderate exercise 3-5 days/week

0 cal/day

Very Active ×1.725

Hard exercise 6-7 days/week

0 cal/day

Extremely Active ×1.9

Very hard exercise, physical job

0 cal/day

About BMR (Basal Metabolic Rate)

BMR represents the minimum number of calories your body needs to maintain basic physiological functions while at rest, including breathing, circulation, cell production, and nutrient processing.

🧮 Calculation Method

This calculator uses the Mifflin-St Jeor Equation, which is considered the most accurate for most people:

Men: BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age(years) + 5

Women: BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age(years) - 161

⚡ Factors Affecting BMR

Age: BMR decreases with age (about 2% per decade after 30)
Gender: Men typically have higher BMR than women
Body Size: Larger bodies burn more calories
Muscle Mass: Muscle tissue burns more calories than fat
Genetics: Some people naturally have faster metabolisms

📈 How to Use Your BMR

Weight Loss: Eat fewer calories than your TDEE
Weight Maintenance: Eat approximately your TDEE
Weight Gain: Eat more calories than your TDEE
Never go below BMR: Eating less than BMR can slow metabolism

Important Note

BMR calculations are estimates based on population averages. Individual metabolic rates can vary by ±15% due to genetics, health conditions, medications, and other factors. Consult healthcare professionals for personalized advice.