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    BMR and daily energy

    Your basal metabolic rate and total daily energy expenditure, shown as information.

    The Mifflin-St Jeor equation estimates the energy your body uses at complete rest, then scales it by an activity factor. Both figures are population averages applied to your inputs.

    Reference distributions are published separately for each sex.

    Fill in the fields above and your result appears here instantly. Nothing is sent anywhere — the whole calculation runs in your browser.

    This tool provides general wellness information by comparing self-reported measurements with published population data. It does not diagnose, treat or predict any disease, and it is not a substitute for advice from a qualified clinician.