BEE Calculator
Estimate basal energy expenditure and total energy expenditure with activity, stress, and fever factors.
What Is Basal Energy Expenditure?
Basal energy expenditure (BEE) is the calories your body needs at rest for basic functions—breathing, circulation, and cell maintenance. Total energy expenditure (TEE) adjusts BEE for activity, clinical stress, and fever. Related: TDEE Calculator and Adjusted Body Weight Calculator.
Harris-Benedict Equation
Women: BEE = 655.1 + 9.563 × weight (kg) + 1.850 × height (cm) − 4.676 × age (years).
Men: BEE = 66.5 + 13.75 × weight (kg) + 5.003 × height (cm) − 6.775 × age (years).
Total Energy Expenditure
TEE = BEE × activity multiplier × stress multiplier × temperature multiplier. Activity ranges from 1.2 (bed-ridden) to 2.25 (heavily active). Stress and fever multipliers increase energy needs during illness or recovery.
Frequently Asked Questions
Is Harris-Benedict accurate for everyone?
It provides a useful clinical estimate but may differ from indirect calorimetry. Individual metabolism, body composition, and medical conditions affect true needs.
Why do stress multipliers differ by sex?
Clinical nutrition literature reports sex-specific stress factors based on observational data in hospitalized patients. This calculator follows those published values.
Can children use this calculator?
No. The Harris-Benedict equation in this tool is intended for adults. Use pediatric-specific equations for children.
What units are used?
Enter height in centimeters and weight in kilograms. Results are in kilocalories per day (kcal/day).
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