BMR Calculator

Basal metabolic rate is the energy your body uses at complete rest, before any movement is added on top. This tool applies the Mifflin St Jeor equation to your sex, age, height and weight, then multiplies the result by the usual activity factors to show daily calorie needs. Height and weight can be entered in metric or imperial units and every figure is returned in calories per day. Treat the number as an estimate for planning, not as medical advice or a prescribed intake.