Total daily energy expenditure is your basal rate multiplied by a factor representing everyday activity. It is your break-even point: eating around this figure keeps your weight steady.
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Formula and method
Basal metabolic rate × activity factor, from 1.2 for sedentary up to 1.9 for very active.
Formula used
TDEE = BMR x physical activity factor
Assumptions and limits
- Do not overestimate your activity factor — that is the most common error in this calculation.
Scientific sources
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.
View sourceFAO/WHO/UNU. Human Energy Requirements. FAO Food and Nutrition Technical Report Series 1, Rome, 2004.