BMR Calculator
Estimate your basal metabolic rate — the calories your body burns at rest.
BMR1,780kcal/day
This uses the Mifflin-St Jeor equation for men: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age + 5. For women, subtract 166 instead of adding 5. A 30-year-old man weighing 80 kg at 180 cm has a BMR of 1,780 kcal/day — the energy used at complete rest, before any activity.
Educational estimate only — not professional financial or medical advice.
Questions
What is BMR?
Basal metabolic rate is the number of calories your body uses at complete rest to keep vital functions running. It is the baseline before any physical activity is added.
Which formula is used?
The Mifflin-St Jeor equation, shown here for men (10 × kg + 6.25 × cm − 5 × age + 5). For women the constant is −161 instead of +5.