1. What is the Mifflin-St Jeor BMR Equation?

The Mifflin-St Jeor equation is a widely used formula for estimating Basal Metabolic Rate (BMR) - the number of calories your body needs at rest to maintain basic physiological functions. It's considered one of the most accurate BMR formulas available.

2. How Does the Calculator Work?

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

Where:

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

Explanation: The equation calculates the minimum energy required to sustain vital functions while at complete rest, accounting for weight, height, and age factors.

3. Importance of BMR Calculation for Weight Loss

Details: Knowing your BMR is essential for effective weight management. It helps determine your daily calorie needs and creates an appropriate calorie deficit for sustainable weight loss without compromising health.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between BMR and TDEE?
A: BMR represents calories burned at complete rest, while TDEE (Total Daily Energy Expenditure) includes all daily activities and exercise.

Q2: How often should I recalculate my BMR?
A: Recalculate every 5-10 kg of weight loss or every 6 months, as BMR changes with weight, age, and body composition.

Q3: Is this calculator accurate for everyone?
A: While generally accurate, individual variations in metabolism, muscle mass, and health conditions can affect actual BMR.

Q4: How should I use BMR for weight loss?
A: Multiply your BMR by an activity factor to get TDEE, then create a 500-1000 calorie deficit per day for safe weight loss of 0.5-1 kg per week.

Q5: Does the equation differ for men?
A: Yes, the male equation is: BMR = 10 × weight + 6.25 × height - 5 × age + 5