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.
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
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 sedentary||Sitting (e.g., office work), watching TV, cooking, personal care, driving a car, light walks, typical household duties.|
|Moderate to active||Standing, carrying light loads (e.g., waiting tables), longer walks, light aerobic exercises, commuting by bus.|
|Heavily active||Agricultural 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:
BEE = 655.1 + (9.563 * weight in kg) + (1.850 * height in cm) - (4.676 * age); and
BEE = 66.5 + (13.75 * weight in kg) + (5.003 * height in cm) - (6.775 * age).
Imperial system version:
BEE = 65.51 + (4.35 * weight in pounds) + (4.7 * height in inches) - (4.7 * age in years); and
BEE = 66 + (6.2 * weight in pounds) + (12.7 * height in inches) – (6.76 * age in years).
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:
|Light or sedentary||1.53|
|Moderate to active||1.76|
|Factor||Value for men||Value for women|
|Inflammatory bowel disease||1.11||1.12|
|>= 100.4°F or 38°C||1.1|
|>=102.2°F or 39°C||1.2|
|>=104°F or 40°C||1.3|
|>=105.8°F or 41°C||1.4|
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.