BMR Calculator
Calculate your Basal Metabolic Rate (BMR) – the number of calories your body needs at complete rest. Understand your daily energy requirements for weight management.
Your Metabolic Results
Calories needed per day at complete rest
Daily Calorie Needs
Based on your activity level
BMI
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Weight Management:
About BMR
Basal Metabolic Rate (BMR) is the number of calories your body needs to maintain basic physiological functions at rest. It accounts for 60-75% of daily calorie expenditure.
Why Calculate BMR
Knowing your BMR helps create effective weight loss/gain plans, understand your metabolism, and set accurate calorie targets for your fitness goals.
How It Works
The calculator uses the Mifflin-St Jeor Equation, the most accurate BMR formula. It considers gender, age, weight, and height to estimate your resting energy needs.
Benefits
Personalized calorie targets, better understanding of your metabolism, informed diet planning, and scientific approach to weight management.
Enter Your Details
Provide your gender, age, weight, height, and activity level. These factors significantly impact your metabolic rate.
Calculate
Click calculate to get your BMR (resting calories) and TDEE (total daily energy expenditure based on activity level).
Plan Your Nutrition
Use the results to create a personalized nutrition plan for weight maintenance, loss, or gain based on your goals.
Frequently Asked Questions – BMR Calculator
BMR (Basal Metabolic Rate) measures calories burned at complete rest for basic bodily functions. Metabolism includes all calorie expenditure – BMR plus physical activity and food digestion. BMR typically accounts for 60-75% of total daily energy expenditure.
Men generally have more muscle mass than women, resulting in higher BMR. Age affects metabolism because muscle mass typically decreases with age, reducing BMR. The Mifflin-St Jeor formula accounts for these biological differences.
The Mifflin-St Jeor Equation used here is about 90% accurate for most people. For precise measurements, medical tests like indirect calorimetry are needed. Consider this a good estimate to start with, which you can adjust based on real-world results.
TDEE (Total Daily Energy Expenditure) is what you should base your calorie intake on, as it includes your activity level. Eating at your TDEE maintains weight. For weight loss, consume 250-500 calories below TDEE; for gain, consume above it.
Recalculate every 5-10 kg of weight change or if your activity level significantly changes. Muscle gain/fat loss affects BMR, so athletes may need more frequent recalculations. Most people benefit from checking every 3-6 months.