BMR Calculator
Your basal metabolic rate — the calories you burn at rest.
—BMR (kcal/day)
—Lightly active
How it's calculated
BMR (Basal Metabolic Rate) is the energy your body burns at complete rest, using the Mifflin-St Jeor equation — the most accurate simple formula in common use. The second figure multiplies BMR by 1.375 for light daily activity, giving a rough maintenance-calorie estimate. For a full activity breakdown, use the Calorie Needs Calculator. Not medical advice.