BMR Calculator
Calculate your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor equation based on your gender, age, height, and weight. Understand the minimum calories your body needs at rest.
How to Use
- Select your biological gender (male or female).
- Enter your age, height (in cm), and weight (in kg).
- Click the "Calculate BMR" button to see the result.
- BMR represents the minimum calories your body burns at complete rest (e.g. lying still). Your actual daily calorie needs will be higher.
FAQ
What is BMR and why should I calculate it?
BMR (Basal Metabolic Rate) is the minimum number of calories your body needs to maintain basic life functions (breathing, heartbeat, temperature regulation, etc.) while completely at rest. Knowing your BMR helps you plan a reasonable diet and exercise regimen.
How accurate is the Mifflin-St Jeor equation?
The Mifflin-St Jeor equation is considered one of the most accurate BMR estimation formulas available, more precise than the older Harris-Benedict equation. However, it is still an estimate — individual metabolic rates may vary due to muscle mass, genetics, and other factors.
What is the difference between BMR and TDEE?
BMR is the minimum calorie expenditure at complete rest, while TDEE (Total Daily Energy Expenditure) multiplies BMR by an activity factor to represent the total calories you actually burn throughout the day, including physical activity. For weight management, TDEE is the more useful reference.