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Estimate basal metabolic rate with the Mifflin–St Jeor equation and daily energy expenditure using an activity factor. This tool is for adults.
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metric or imperial
age, sex, height and weight
a typical weekly level
BMR and TDEE
male: BMR = 10 × kg + 6.25 × cm − 5 × age + 5female: BMR = 10 × kg + 6.25 × cm − 5 × age − 161TDEE = BMR × activity factorWorked example
A 30-year-old man, 180 cm, 80 kg, with moderate activity (1.55).
BMR estimates resting needs; TDEE multiplies it by an approximate daily activity level.
No. It estimates maintenance needs; a nutrition plan should account for health, goals and professional advice.
No. This equation and these activity factors are provided for adults aged 18 and over.
Available actions follow the calculator privacy policy. Sensitive inputs are never added to the page URL; an explicitly saved scenario stays local.
No. The calculation runs locally in your browser and is not stored in a database.
Uses the published Mifflin–St Jeor equation and five activity factors with metric and imperial inputs.
