1. What is BMR?

Basal Metabolic Rate (BMR) is the number of calories your body needs to perform basic life-sustaining functions at rest. It represents the minimum energy required to maintain vital functions such as breathing, circulation, and cell production.

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor equation for men:

Where:

• \( weight \) — Body weight in kilograms (kg)
• \( height \) — Height in centimeters (cm)
• \( age \) — Age in years

Explanation: This equation provides a more accurate estimate of BMR compared to older formulas and is widely used in clinical settings.

3. Importance of BMR Calculation

Details: Knowing your BMR is essential for creating effective weight management plans, whether for weight loss, maintenance, or gain. It helps determine your daily caloric needs when combined with your activity level.

4. Using the Calculator

Tips: Enter your weight in kg, height in cm, and age in years. All values must be valid (weight > 0, height > 0, age between 1-120). For accurate results, use current measurements.

5. Frequently Asked Questions (FAQ)

Q1: Why use Mifflin-St Jeor equation?
A: The Mifflin-St Jeor equation is considered one of the most accurate BMR formulas, with error rates of about 10% compared to measured BMR values.

Q2: What factors affect BMR?
A: BMR is influenced by age, gender, weight, height, body composition, genetics, and hormonal factors.

Q3: How often should I recalculate my BMR?
A: You should recalculate your BMR whenever your weight changes significantly (by 5kg or more) or annually as you age.

Q4: Is this calculator only for men?
A: Yes, this specific calculator uses the equation for men. Women should use a different equation that accounts for gender differences.

Q5: How can I use my BMR for weight management?
A: Multiply your BMR by an activity factor to get your Total Daily Energy Expenditure (TDEE), then adjust your calorie intake based on your weight goals.