BMR Calculator
Estimate your Basal Metabolic Rate (BMR) and daily caloric needs using the Mifflin-St Jeor formula.
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How to Use the BMR Calculator
Enter the required values in the fields above and click Calculate. All calculations are executed directly inside your web browser using proven mathematical formulas, ensuring instantaneous results and 100% privacy without transmitting your numbers to remote servers.
Mathematical Formula
Men: (10 × kg) + (6.25 × cm) - (5 × age) + 5 | Women: (10 × kg) + (6.25 × cm) - (5 × age) - 161
Worked Example
A 30-year-old male weighing 80 kg and 180 cm tall has a baseline BMR of ~1,780 calories/day.
Important Notes & Limitations
Actual metabolic rate varies based on genetics, lean body mass, hormone levels, and ambient temperature.
Frequently Asked Questions
Basal Metabolic Rate is the number of calories your body burns at complete rest to maintain vital functions like breathing, circulation, and cell production.