BMR Calculator

BMR stands for Basal Metabolic Rate, which is the number of calories your body needs to maintain basic physiological functions at rest. These functions include breathing, circulation, cell production, nutrient processing, protein synthesis, and ion transport. BMR is important because it helps you understand your body’s minimum energy requirements, which is essential for creating effective diet and exercise plans, whether your goal is weight loss, maintenance, or muscle gain.

Our BMR calculator uses the Mifflin-St Jeor equation, which is considered one of the most accurate formulas for calculating basal metabolic rate. However, it’s important to note that BMR calculations provide estimates rather than exact values. Individual variations in metabolism, body composition, genetics, and other factors can affect your actual BMR. For most people, this calculator provides a reliable estimate that can be used as a starting point for dietary planning.

BMR (Basal Metabolic Rate) is the number of calories your body burns at complete rest, while TDEE (Total Daily Energy Expenditure) is the total number of calories you burn in a day, including all activities. TDEE is calculated by multiplying your BMR by an activity factor that accounts for your physical activity level. Our calculator shows both your BMR and your maintenance calories (which is your TDEE), giving you a complete picture of your daily energy needs.

Your BMR is a useful tool for weight management. To lose weight, you need to consume fewer calories than your TDEE (maintenance calories). A safe rate of weight loss is typically 0.5-1 kg (1-2 lbs) per week, which requires a daily deficit of 500-1000 calories. To gain weight, consume more calories than your TDEE. For weight maintenance, consume calories equal to your TDEE. Our calculator provides specific calorie targets for each of these goals based on your personal BMR and activity level.

Several factors affect your BMR, including age, gender, weight, height, and body composition. BMR typically decreases with age as muscle mass tends to decrease. Men generally have a higher BMR than women due to greater muscle mass. Taller and heavier people have higher BMRs because they have more body mass. Muscle tissue burns more calories than fat tissue, so people with higher muscle mass have a higher BMR. Other factors include genetics, hormonal status, and environmental temperature.