Estimate adult basal metabolic rate and daily maintenance calories using the Mifflin–St Jeor equation and a selected activity multiplier. Enter age, sex as used by this equation, height, weight, units, activity and a goal. The page presents an estimated goal value and a cautious range, not a prescribed diet. Energy needs vary with health, medication, body composition and daily movement. The calculator is for adults and does not provide personalized medical or nutrition care.
Choose metric or imperial units, then enter height and weight.
Enter adult age, the equation's sex setting, activity and goal.
Review BMR, maintenance and goal estimates alongside the health disclaimer.
Mifflin–St Jeor BMR: 10 × weight(kg) + 6.25 × height(cm) − 5 × age + sex constant
Maintenance estimate: BMR × selected activity multiplier
Goal estimate: Maintenance estimate ± modest adjustment, subject to adult floor
Is this an exact calorie prescription?
No. It is an equation-based estimate and cannot assess personal health needs. Consult a qualified clinician or dietitian for individualized guidance.
Can teenagers or pregnant people use this estimate?
This calculator is designed for adults and does not model pregnancy, breastfeeding or adolescent growth. Seek qualified medical advice for those needs.