1. What is the Mifflin-St Jeor Equation?

The Mifflin-St Jeor equation is considered the most accurate for calculating basal metabolic rate (BMR), which represents the number of calories your body needs at complete rest. It's widely used in nutrition and fitness applications like MyFitnessPal.

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor equation:

Where:

• \( Weight \) — Body weight in kilograms
• \( Height \) — Height in centimeters
• \( Age \) — Age in years
• \( +5 \) — Adjustment for males
• \( -161 \) — Adjustment for females

Explanation: The equation calculates your body's energy requirements at rest based on your body composition and demographic factors.

3. Importance of BMR Calculation

Details: Knowing your BMR is essential for weight management, as it forms the basis for determining your total daily energy expenditure (TDEE) when combined with activity level.

4. Using the Calculator

Tips: Enter your weight in kg, height in cm, age in years, and select your gender. For accurate results, use recent measurements.

5. Frequently Asked Questions (FAQ)

Q1: Why use Mifflin-St Jeor instead of Harris-Benedict?
A: The Mifflin-St Jeor equation is more accurate for modern populations, especially for obese individuals.

Q2: What factors affect BMR?
A: Muscle mass, age, genetics, hormonal status, and body composition all influence BMR.

Q3: How often should I recalculate my BMR?
A: Recalculate whenever your weight changes significantly (5+ kg) or at least every 6 months.

Q4: Does this account for activity level?
A: No, this is just your basal rate. Multiply by an activity factor to get total daily needs.

Q5: How accurate is this calculation?
A: It's about 70-80% accurate for most people. For precise measurement, metabolic testing is needed.