Adult nutrition estimate
Basal Energy Expenditure Calculator
Estimate basal energy expenditure (BEE) and total daily energy expenditure using the revised Harris–Benedict equation and an activity factor.
Calculation result
Estimated energy expenditure
View equation and interpretation
Male: BEE = 66.47 + (13.75 × weight in kg) + (5.003 × height in cm) − (6.755 × age in years)
Female: BEE = 655.1 + (9.563 × weight in kg) + (1.850 × height in cm) − (4.676 × age in years)
BEE estimates the energy needed to maintain basic bodily functions at rest. Estimated daily energy expenditure is calculated as BEE × selected activity factor.
Clinical note: This tool provides an estimate for adults and is not a substitute for individual nutrition assessment. Use clinical judgement or specialist assessment where energy needs may be altered, including acute illness, pregnancy, or major changes in body composition.
