BMR Calculator
Our Basal Metabolic Rate (BMR) Calculator helps you estimate the number of calories your body burns at rest to maintain basic functions like breathing, circulation, and cell production. Knowing your BMR is a key step in understanding your total daily energy expenditure and planning for weight management.
Select your biological gender for formula accuracy.
Enter your age in years (e.g., 30).
Enter your weight.
Choose your preferred weight unit.
Choose your preferred height unit.
Enter your height in centimeters (e.g., 165).
Enter the feet part of your height (e.g., 5).
Enter the inches part of your height (e.g., 5).
Our Basal Metabolic Rate (BMR) Calculator helps you estimate the number of calories your body burns at rest to maintain basic functions like breathing, circulation, and cell production. Knowing your BMR is a key step in understanding your total daily energy expenditure and planning for weight management.
Mifflin-St Jeor Equation: Men: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) + 5 Women: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) - 161 Harris-Benedict Equation (Revised 1984): Men: BMR = (13.397 × weight in kg) + (4.799 × height in cm) - (5.677 × age in years) + 88.362 Women: BMR = (9.247 × weight in kg) + (3.098 × height in cm) - (4.330 × age in years) + 447.593
Let's calculate the BMR for a 30-year-old female who is 165 cm tall and weighs 60 kg. Using the Mifflin-St Jeor Equation: BMR = (10 × 60) + (6.25 × 165) - (5 × 30) - 161 BMR = 600 + 1031.25 - 150 - 161 BMR = 1320.25 calories/day Using the Harris-Benedict Equation: BMR = (9.247 × 60) + (3.098 × 165) - (4.330 × 30) + 447.593 BMR = 554.82 + 511.17 - 129.9 + 447.593 BMR = 1383.683 calories/day This shows her estimated daily calorie burn at rest.
Your Basal Metabolic Rate (BMR) is the minimum number of calories your body needs to perform essential, life-sustaining functions while at rest. These functions include breathing, circulating blood, maintaining body temperature, and cell growth. It's the energy your body expends just to keep you alive, without any physical activity.
BMR (Basal Metabolic Rate) is the calories burned at complete rest. TDEE (Total Daily Energy Expenditure) is your BMR plus the calories you burn through physical activity, digestion, and other daily movements. TDEE gives you a more complete picture of your overall daily calorie burn.
Both the Mifflin-St Jeor and Harris-Benedict equations are widely used, but the Mifflin-St Jeor equation is generally considered more accurate for a broader population. However, all BMR formulas provide estimates, and individual metabolic rates can vary due to factors like body composition, genetics, and health conditions.
No, this calculator provides an estimate based on commonly accepted formulas. Individual BMR can vary significantly due to factors like muscle mass, body fat percentage, genetics, hormone levels, and health conditions. For personalized advice, especially concerning diet and exercise, always consult with a healthcare professional or registered dietitian. This tool is for informational purposes only.
Knowing your BMR is the first step. You can then estimate your Total Daily Energy Expenditure (TDEE) by multiplying your BMR by an activity factor. To lose weight, you generally need to consume fewer calories than your TDEE. To gain weight, you'd consume more. For maintenance, aim for roughly your TDEE. Remember, this is a starting point, and individual results may vary.
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