🍏 Calorie & Energy-Expenditure Equations

Mifflin–St. Jeor Equation (primary basis for calorie recommendation)

We calculate your Basal Metabolic Rate (BMR)—the energy your body needs at rest—using the Mifflin–St. Jeor equation. Then, by factoring in your activity level and personal goal (loss, maintenance, gain), we estimate your Total Daily Energy Expenditure (TDEE) and suggest a daily calorie intake.

Females:

• imperial BMR = 4.536 × weight(lb) + 15.88 × height(in) – 5 × age (yr) – 161
• metric BMR = 10 × weight (kg) + 6.25 × height (cm) – 5 × age (yr) – 161

Males:

• imperial BMR = 4.536 × weight(lb) + 15.88 × height(in) – 5 × age (yr) + 5
• metric BMR = 10 × weight (kg) + 6.25 × height (cm) – 5 × age (yr) + 5

Mifflin MD, St Jeor ST, Hill LA, et al. A new predictive equation for resting energy expenditure in healthy individuals. Am J Clin Nutr. 1990;51(2):241–247. https://doi.org/10.1093/ajcn/51.2.241

Cunningham Equation

Cunningham JJ. A reanalysis of resting metabolic rate in adult humans. Am J Clin Nutr. 1980;33(6):1762–1764. https://doi.org/10.1093/ajcn/33.6.1762

Harris–Benedict Equation

Harris JA, Benedict FG. A biometric study of human basal metabolism. Proc Natl Acad Sci U S A. 1918;4(12):370–373. https://doi.org/10.1073/pnas.4.12.370

⚖️ Body Mass Index (BMI)

WHO Classification of BMI

World Health Organization. Obesity: preventing and managing the global epidemic. WHO Technical Report Series 894. 2000. https://www.who.int/publications/i/item/WHO-TRS-894

📊  Total Daily Energy Expenditure (TDEE)