BMR Calculator
Estimate your Basal Metabolic Rate (BMR) – the calories your body burns at rest – using the Mifflin-St Jeor equation.
Your BMR estimates energy used at complete rest. For estimated daily maintenance calories including physical activity, see the Calorie Calculator.
Estimate your Basal Metabolic Rate (BMR) using the validated Mifflin-St Jeor equation.
[!NOTE] BMR calculations are statistical estimates based on population averages. They do not substitute for professional medical advice or clinical diagnostic evaluation.
Formula & Method
- BMR for Men:
(10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) + 5 - BMR for Women:
(10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) - 161
Worked Example
For a 30-year-old male, height 180 cm, weight 75 kg:
BMR = 10(75) + 6.25(180) - 5(30) + 5 = 750 + 1,125 - 150 + 5 = 1,730 kcal/day
Frequently Asked Questions
What is Basal Metabolic Rate (BMR)?+
BMR is the estimated number of calories your body needs to perform basic life-sustaining functions (like breathing, circulation, and cell production) while at complete rest.
Which formula does this BMR calculator use?+
It uses the Mifflin-St Jeor equation, widely recognized in clinical research as one of the most accurate BMR estimation formulas.
Is this calculation medical advice?+
No. BMR estimates provide general educational guidance. Consult a healthcare professional or registered dietitian for clinical health assessment.