BEE Calculator - Basal Energy Expenditure

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The Harris-Benedict equations use separate constants for males and females. Sex also affects the clinical stress multipliers for certain conditions.
Adult ages only. The Harris-Benedict formula is validated for adults aged 18 and over.
years
Body weight in the selected unit.
kg
Standing height in the selected unit.
cm
The 1984 Roza-Shizgal revision corrected minor biases in the original equations. Both are widely used; the original is more common in clinical references.
Physical activity level (PAL) multiplier applied to BEE to obtain Total Energy Expenditure.
Sex-specific stress factors from clinical nutrition literature. Used in hospital nutrition support to account for extra metabolic demands of illness, surgery, or injury. Leave at "None" for everyday use.
Fever raises resting metabolism roughly 10% for each degree Celsius above normal. Used in ICU and clinical nutrition calculations.
1 kcal = 4.184 kJ. Most nutrition labels use kcal.
Adds a daily calorie target to the schedule below based on a standard 3,500 kcal per 0.45 kg deficit or surplus rule.
Basal Energy Expenditure (BEE)Normal metabolic rate
1,736

Energy needed at complete rest - your metabolic baseline.

Total Energy Expenditure (TEE)2,387
Daily calorie target2,387
Activity multiplier1.375
Stress multiplier1
Fever multiplier1
BEE (kJ/day)7,264
TEE (kJ/day)9,988
BEE (basal)1,736
TEE (active)2,387
Daily target2,387
1,736 kcal/day
Very low<1200Low1200-1500Normal1500-2200Elevated2200-2800High2800+

BEE 1,736 kcal/day - TEE 2,387 kcal/day.

  • Your body burns approximately 1,736 kcal/day at complete rest to maintain basic organ function.
  • After applying your activity level, your estimated total daily energy expenditure is 2,387 kcal.

Next stepBEE is a baseline estimate. Individual variation, body composition, hormonal status, and medications all influence actual metabolic rate. A registered dietitian can refine these targets for your specific situation.

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