BEE Calculator
Calculate your Basal Energy Expenditure and Total Energy Expenditure
Calculate Your Basal Energy Expenditure
Choose the activity level that best describes your lifestyle
Select any medical conditions that may affect your energy needs
Select your current body temperature range
Your Energy Expenditure Results
BEE Reference Ranges
Harris-Benedict Equations
Men (Metric)
BEE = 66.5 + (13.75 × kg) + (5.003 × cm) - (6.775 × age)
Women (Metric)
BEE = 655.1 + (9.563 × kg) + (1.850 × cm) - (4.676 × age)
Factors Affecting BEE
Young age, male sex, tall height, high muscle mass
Advanced age, female sex, low muscle mass, fasting
Fever increases BEE by ~10% per degree Celsius
Exercise and stress can significantly increase total energy needs
Understanding Basal Energy Expenditure (BEE)
What is BEE?
Basal Energy Expenditure (BEE) represents the minimum amount of energy your body needs to maintain basic physiological functions while at rest. This includes breathing, circulation, cellular metabolism, protein synthesis, and brain function.
BEE vs BMR
BEE and Basal Metabolic Rate (BMR) are closely related but measured under slightly different conditions. BEE is calculated using the Harris-Benedict equation and represents your daily caloric needs for basic functions.
Clinical Applications
- •Nutritional planning for hospitalized patients
- •Weight management and diet planning
- •Enteral and parenteral nutrition calculations
- •Metabolic assessment in clinical settings
Total Energy Expenditure (TEE)
TEE represents your complete daily energy needs, calculated by multiplying BEE by activity, stress, and temperature factors. This provides a more comprehensive picture of your caloric requirements.
Activity Factors
Accounts for physical activity and lifestyle
Stress Factors
Medical conditions that increase energy needs
Temperature Factors
Fever significantly increases energy expenditure
Important Considerations
- •Equations may be less accurate for obese individuals
- •Individual variations can be significant
- •Muscle mass greatly influences metabolic rate
Medical Disclaimer
This calculator provides educational estimates based on the Harris-Benedict equation and clinical multipliers. Results should not replace professional medical or nutritional assessment. Individual metabolic rates can vary significantly based on genetics, health conditions, medications, and other factors. For medical nutrition therapy, enteral/parenteral nutrition planning, or clinical decision-making, consult with a healthcare provider, registered dietitian, or clinical nutrition specialist. This tool is not intended for use in children or pregnant/lactating women without professional guidance.