1. What is the Mifflin-St Jeor Equation?

The Mifflin-St Jeor equation is considered the most accurate for estimating basal metabolic rate (BMR) in healthy individuals. It's the equation recommended by the Mayo Clinic for calculating daily calorie needs.

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor equation:

Where:

• \( Weight \) — Weight in kilograms (kg)
• \( Height \) — Height in centimeters (cm)
• \( Age \) — Age in years
• \( Gender\_factor \) — +5 for men, -161 for women (kcal/day)

Total Daily Calories: BMR is multiplied by an activity factor to estimate total daily calorie needs.

3. Importance of BMR Calculation

Details: Knowing your BMR helps determine your basic calorie needs. When combined with activity level, it provides an estimate of total daily calories needed to maintain current weight.

4. Using the Calculator

Tips: Enter weight in kg, height in cm, age in years, select gender and activity level. For weight loss, consume fewer calories than calculated; for weight gain, consume more.

5. Frequently Asked Questions (FAQ)

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

Q2: What are typical BMR values?
A: Average BMR is about 1500-2000 kcal/day for men and 1300-1700 kcal/day for women, but varies by size and body composition.

Q3: How accurate is this calculator?
A: It provides a good estimate for most people, but individual variations in metabolism can affect actual needs.

Q4: Should I eat below my BMR to lose weight?
A: Not recommended long-term. For healthy weight loss, aim for 10-20% below your total daily calories, not below BMR.

Q5: How often should I recalculate my needs?
A: Recalculate after significant weight changes (±5kg) or changes in activity level.