Calculate your Basal Metabolic Rate
Our Basal Metabolic Rate (BMR) calculator helps you determine the number of calories your body needs at rest to maintain basic life functions. This fundamental measurement is essential for weight management, nutrition planning, and understanding your body's energy requirements.
BMR represents the minimum number of calories your body needs to perform essential functions like breathing, circulation, cell production, nutrient processing, protein synthesis, and ion transport. It accounts for approximately 60-75% of your total daily calorie expenditure.
Most accurate for most people, accounts for age, gender, weight, and height
Classic formula, slightly less accurate but widely used
Best for those who know their body fat percentage
Ideal for athletes and very active individuals
Enter your age, gender, weight, height, and select the formula that best fits your situation. The calculator will compute your BMR and provide TDEE estimates for different activity levels, helping you set appropriate calorie goals.
BMR: Calories needed at complete rest
TDEE: Total calories including activity (BMR × Activity Multiplier)
Use the Mifflin-St Jeor formula for the most accurate results. Your BMR is your metabolic baseline - never eat below this number for extended periods as it can slow your metabolism and cause health issues.