1. What is the Mifflin-St Jeor Equation?

The Mifflin-St Jeor equation is considered the most accurate formula for calculating basal metabolic rate (BMR). It estimates the number of calories your body needs to perform basic life-sustaining functions at rest.

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor equation:

Where:

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

Explanation: This equation provides the most reliable estimate of basal metabolic rate for the general population.

3. Importance of BMR Calculation

Details: Knowing your BMR is essential for creating effective weight management plans, determining daily calorie needs, and establishing appropriate nutritional goals.

4. Using the Calculator

Tips: Enter your weight in kilograms, height in centimeters, and age in years. All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is Mifflin-St Jeor considered the most reliable?
A: It was developed using more modern research methods and has been validated across diverse populations, showing better accuracy than older equations.

Q2: What factors affect BMR?
A: Age, gender, body composition, genetics, and hormonal factors can all influence your basal metabolic rate.

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

Q4: Is this equation suitable for everyone?
A: While it's the most accurate for the general population, it may need adjustment for extremely muscular individuals, athletes, or those with certain medical conditions.

Q5: How does BMR relate to total daily energy expenditure?
A: BMR accounts for 60-75% of total daily energy expenditure. To calculate total needs, multiply BMR by an activity factor.