BMR is the minimum number of calories your body needs to perform basic life-sustaining functions like breathing, circulation and cell production.
BMR Calculator
Calculate your Basal Metabolic Rate — the calories your body burns at complete rest.
AU
BMR for Australian adults
BMR is your resting energy expenditure — the kilojoules your body burns just keeping you alive. For an average Australian adult woman BMR is around 5,500–6,300 kJ (1,320–1,500 kcal); for an average Australian man around 7,100–8,000 kJ (1,700–1,900 kcal). Mifflin-St Jeor is the formula the Dietitians Australia evidence library recommends as the most accurate predictive equation for everyday Aussies.
Australian sources: Dietitians Australia
Frequently asked questions
What is BMR? +
BMR is the number of calories your body burns at complete rest to keep you alive — breathing, circulation, cell maintenance.
Which BMR formula is most accurate? +
Mifflin-St Jeor for the general population; Katch-McArdle if you know your body fat percentage.
Does BMR decrease with age? +
Yes — about 1-2% per decade after age 20, mostly because of muscle loss.
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