Gender
Man
Age
years
Height
in
Weight
lb
Activity
Light or sedentary
Stress
None
Temperature
Normal
Results
BEE
kcal
/day
Total Energy Expenditure
kcal
/day

Our BEE calculator is here to help you calculate your Basal Energy Expenditure in no time; just enter all the necessary data, and receive your daily caloric expenditure - presented both in total and basal energy.

Now you can easily match your meal calorie intake and additional energy-consuming activities to your daily caloric requirements. ⚡

Hey! Our basal energy expenditure calculator allows you to freely change its energy parameters, and temperature units, for a totally hassle-free experience. 🤓

Basal energy expenditure definition

Basal energy expenditure (BEE) is the amount of energy that should be sufficient to cover all movement and bodily processes necessary for an organism to survive for a day, given in kcal/day or kJ/day. This energy requirement is most accurate when it is used to describe an alert, resting human of a calm mental and physical state, constantly in a room temperature room. The person needs to have gotten a good night's sleep, and has consumed a meal over 12 hours ago.

Depending on the amount of physical activity, the BEE may constitute 40-70% of the total energy expenditure.

How to use the BEE calculator?

In order to calculate the basal energy expenditure, you'll need the following four pieces of data:

  • Gender - the calculation is gender-specific! (We decided to keep things simple and merge the BEE woman and BEE man calculators);
  • Age - Keep in mind that this BEE calculator is not meant for children;
  • Height; and
  • Weight.

If you'd also like to compute your total energy expenditure (TEE), you'll also need to provide your:

  • Activity level - depends on your lifestyle;
Bed-ridden Lying, sleeping, eating
Light or sedentarySitting (e.g., office work), watching TV, cooking, personal care, driving a car, light walks, typical household duties.
Moderate to activeStanding, carrying light loads (e.g., waiting tables), longer walks, light aerobic exercises, commuting by bus.
Heavily activeAgricultural work, manual labor, heavy-duty cleaning, strenuous exercises performed on a regular basis.

  • Stress factors - are there any stress factors that could influence your energy expenditure? Think about any comorbidities or traumas and find the category that describes you best; and

  • Temperature - do you have a fever? We define a fever as a body temperature that is above 100.4°F or 38°C. Find the temperature that is the closest to yours.

Your results are ready! Would you like to know more about your daily calorie expenditure? If so, try the following tools:

How to calculate BEE?

Our BEE calculator could also be called a Harris-Benedict calculator - as we decided to use the original Harris-Benedict basal energy expenditure formula for our equations. It is presented below:

Metric system version:

  • Women: BEE = 655.1 + (9.563 * weight in kg) + (1.850 * height in cm) - (4.676 * age); and
  • Men: BEE = 66.5 + (13.75 * weight in kg) + (5.003 * height in cm) - (6.775 * age).

Imperial system version:

  • Women: BEE = 65.51 + (4.35 * weight in pounds) + (4.7 * height in inches) - (4.7 * age in years); and
  • Men: BEE = 66 + (6.2 * weight in pounds) + (12.7 * height in inches) – (6.76 * age in years).

TEE calculator

Our built-in total energy expenditure calculator gives you a fuller picture of your calorie expenditure, incorporating more crucial factors.

TEE = BEE * activity * stress * temperature

The values for the activity, temperature, and stress multipliers are specific for certain clinical situations. Below you will find tables with all those values, enumerated, and described:

Activity levelValue
Bed-ridden 1.2
Light or sedentary1.53
Moderate to active1.76
Heavily active2.25

FactorValue for menValue for women
None1.01.0
Solid tumor 1.15 1.25
Leukemia/Lymphoma1.271.37
Inflammatory bowel disease1.111.12
Liver disease1.071.11
Burns1.641.52
Pancreatic disease1.131.21
General surgery1.21.39
Transplantation1.191.27
Sepsis1.331.27
Abscess1.121.39
Other infection1.161.39
Fistula-1.15

TemperatureValue
Normal1.0
>= 100.4°F or 38°C1.1
>=102.2°F or 39°C1.2
>=104°F or 40°C1.3
>=105.8°F or 41°C1.4

References

  • Barak, N., Wall-Alonso, E., & Sitrin, M. (2002). Evaluation of stress factors and body weight adjustments currently used to estimate energy expenditure in hospitalized patients. Journal of Parenteral and Enteral Nutrition, 26(4), 231–238.

  • Human energy requirements, Report of a Joint FAO/WHO/UNU Expert Consultation, Rome, 17-24 October 2001

  • Spodaryk M, Kobylarz K. The usability of Harris-Benedict and Curreri equations in nutritional management of thermal injuries. Ann Burns Fire Disasters. 2005;18(3):117‐121.

Łucja Zaborowska