Daily Energy Requirement Calculator (Harris-Benedict, Mifflin-St Jeor equation)

BEE (Basal Energy Expenditure)
Calculated by Harris-Benedict or Mifflin-St Jeor equations.
Harris-Benedict equation (1919)
Male: 66.5 + (13.75 × weight kg) + (5.003 × height cm) − (6.755 × age)
Female: 655.1 + (9.563 × weight kg) + (1.850 × height cm) − (4.676 × age)
Mifflin-St jeor equation (1990)
Male: (10 × weight kg) + (6.25 × height cm) − (5 × age) + 5
Female: (10 × weight kg) + (6.25 × height cm) − (5 × age) − 161
※For BMI ≥ 30 (obese), adjusted body weight (ABW) is used to avoid overestimation.
ABW = IBW + 0.4 × (actual weight[kg] – IBW)
IBW(Male) = 50kg + 2.3kg x (height[inch] – 60)
IBW(Female) = 45.5kg + 2.3kg x (height[inch] – 60)
TEE (Total Energy Expenditure, Daily Energy Requirement)
TEE = BEE × activity factor × injury factor

Age (years) :
Height (cm) :
Weight (kg) :
※ If unchecked, actual weight is used regardless of BMI.

Activity Factor, Injury Factor

Please enter activity and injury factors according to patient status.
Activity Factor
※Activity Factor: 1.2 (bedridden), 1.3 (ambulatory), 1.5 (normal activity), 1.75 (very active) Injury Factor
※Injury Factor: 1.2 (minor surgery), 1.35 (skeletal trauma), 1.44 (major surgery), 1.4-1.6 (unstable ventilation), 1.6-1.8 (sepsis), 2.1-2.5 (severe burn)