🔥BMR Calculator

Calculate your Basal Metabolic Rate (BMR) and daily calorie needs using scientifically proven formulas. Discover how many calories your body burns at rest and with different activity levels.

✓ Multiple formulas✓ Activity levels✓ Metric & Imperial✓ Instant results

Personal Information

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Age:

Weight (kg):

Height (cm):

BMR Formula:

🎯Mifflin-St Jeor95%

Most accurate for general population (recommended)

📚Harris-Benedict90%

Original BMR formula (revised 1984)

💪Katch-McArdle90%

For lean individuals with known body fat %

Results

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Enter your information to calculate BMR

BMR Formula Comparison

Formula	Best For	Accuracy	Notes
Mifflin-St Jeor	General population	95%	Most accurate, recommended by nutritionists
Harris-Benedict	Historical reference	90%	Older formula, slightly overestimates
Katch-McArdle	Lean/athletic individuals	90%	Requires body fat percentage

Frequently Asked Questions

🤔 What is BMR (Basal Metabolic Rate)?

BMR is the number of calories your body needs to maintain basic physiological functions like breathing, circulation, and cell production while at complete rest.

🔥 How is BMR different from TDEE?

BMR is calories at rest, while TDEE (Total Daily Energy Expenditure) includes calories burned through physical activity and daily movement.

📊 How accurate are these calculations?

BMR calculations are estimates with 90-95% accuracy for most people. Individual variations exist due to genetics, muscle mass, and metabolic health.

💪 Can I increase my BMR?

Yes! Building muscle mass, staying hydrated, getting enough sleep, and eating protein can help increase your metabolic rate.