Calculate basal metabolic rate
Estimate resting energy expenditure using the simplified Mifflin–St Jeor equation.
Input & settings
How to use this tool
Enter adult measurements. Formula: 10×kg + 6.25×cm − 5×age, then +5 for the male coefficient or −161 for the female coefficient.
Limits and behavior
Supports age 20–78, within the original healthy-adult study range. The source predicts resting energy expenditure; it is an approximation to basal energy expenditure, not a measured BMR. Source: https://pubmed.ncbi.nlm.nih.gov/2305711/ Educational estimate only. Not a diagnosis or a prescribed calorie intake. Not suitable for children, pregnancy, lactation, acute illness or individualized clinical decisions. These population equations may perform differently across ethnicities, muscularity and health conditions. Inputs remain in your browser. Input is limited to 1 MB and output to 3 MB. No input content is saved by CraftAI.
Estimate resting daily energy needs
Enter the supported personal inputs to estimate resting energy expenditure using a standard population equation.
Is BMR the same as my actual daily calorie need?
No. Daily expenditure also depends on movement, activity and individual factors.
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