1. What is Basal Metabolic Rate?

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 women:

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 currently considered the most reliable method for calculating basal metabolic rate.

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 and forms the basis for calculating Total Daily Energy Expenditure (TDEE).

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why use Mifflin-St Jeor equation instead of others?
A: The Mifflin-St Jeor equation is considered more accurate than older formulas like Harris-Benedict, especially for obese individuals, as it was developed using more modern research methods.

Q2: What factors can affect BMR?
A: BMR is influenced by factors such as muscle mass, body size, age, gender, genetics, hormonal status, and environmental temperature.

Q3: How often should I recalculate my BMR?
A: You should recalculate your BMR whenever there are significant changes in your weight, muscle mass, or age (typically every few months or after substantial weight changes).

Q4: Can I increase my BMR?
A: Yes, through regular exercise (especially strength training to build muscle), proper nutrition, adequate sleep, and maintaining hydration can help increase your metabolic rate.

Q5: Is BMR the same as metabolism?
A: BMR is a component of your total metabolism. While BMR represents the calories burned at complete rest, total metabolism includes all calories burned through daily activities and exercise.