🍏 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, J. J. (1980). A reanalysis of the factors influencing basal metabolic rate in normal adults. American Journal of Clinical Nutrition, 33(11), 2372–2374. https://pubmed.ncbi.nlm.nih.gov/7435418/

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)

What Is Body Mass Index (BMI)?

Centers for Disease Control and Prevention. Body Mass Index (BMI). Growth Chart Training, 2024. Available at: https://www.cdc.gov/growth-chart-training/hcp/using-bmi/body-mass-index.html

📊  Total Daily Energy Expenditure (TDEE)