Free BMR Calculator

Your Basal Metabolic Rate (BMR) is the number of calories your body needs to maintain basic physiological functions at rest. This includes processes like breathing, circulation, cell production, and nutrient processing. BMR accounts for 60-75% of your total daily energy expenditure and is a crucial factor in weight management.

Why BMR Matters for Your Health

Understanding your BMR is essential for effective weight management because it represents your baseline caloric needs. Whether you're trying to lose, maintain, or gain weight, knowing your BMR helps you determine the appropriate caloric intake. BMR also provides insights into your metabolic health and can help identify potential issues with thyroid function or other metabolic conditions.

Factors That Influence BMR

• Age: BMR decreases with age due to muscle loss and hormonal changes
• Gender: Men typically have higher BMR due to greater muscle mass
• Weight: Heavier individuals generally have higher BMR
• Muscle Mass: Muscle tissue burns more calories than fat tissue
• Genetics: Some people naturally have higher or lower metabolic rates
• Hormones: Thyroid hormones significantly impact metabolic rate

Using Our Free BMR Calculator

Our online BMR calculator uses the Mifflin-St Jeor Equation, which is considered one of the most accurate formulas for estimating BMR. Simply enter your age, gender, height, and weight in either metric or imperial units, and our tool will calculate your BMR instantly. This information can then be used to determine your total daily energy expenditure (TDEE) when combined with your activity level.