Basal Metabolic Rate and Total Daily Energy Expenditure — using the Mifflin-St Jeor equation.
📋 Source:Mifflin–St Jeor equation (Mifflin MD et al., J Am Diet Assoc 1990). Activity multipliers from Harris-Benedict factors. NHMRC Estimated Energy Requirements used for Australian context. Your doctor or healthcare provider knows your history and circumstances — always follow their personalised advice over general information.
Units
Biological sex
BMR
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kJ/day · — kcal/day
Selected TDEE
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kJ/day · — kcal/day
Select your activity level
BMR and TDEE are estimates based on population equations. Individual energy needs vary based on muscle mass, health conditions, medications, and other factors. This calculator is for general information only. For personalised dietary advice — including weight management, sports nutrition, or medical conditions — speak with an Accredited Practising Dietitian (APD). Find one at dietitiansaustralia.org.au.
Sources
Mifflin MD, St Jeor ST, Hill LA, et al. A new predictive equation for resting energy expenditure in healthy individuals. American Journal of Clinical Nutrition. 1990;51(2):241–247. doi:10.1093/ajcn/51.2.241
Frankenfield D, Roth-Yousey L, Compher C. Comparison of predictive equations for resting metabolic rate in healthy nonobese and obese adults. Journal of the American Dietetic Association. 2005;105(5):775–789. (Validated Mifflin-St Jeor as most accurate for most adults)
National Health and Medical Research Council (NHMRC). Nutrient Reference Values for Australia and New Zealand. nrv.gov.au