1. What is BMR?

Basal Metabolic Rate (BMR) is the number of calories your body needs to maintain basic physiological functions at rest, such as breathing, circulation, and cell production. It represents the minimum energy required to keep your body functioning.

2. How Does the Calculator Work?

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

Where:

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

Explanation: The equation accounts for the energy needed to maintain body mass, with adjustments for height and age-related metabolic changes.

3. Importance of BMR Calculation

Details: Knowing your BMR helps in creating personalized diet plans for weight loss, maintenance, or gain. It serves as the foundation for calculating total daily energy expenditure when combined with activity level.

4. Using the Calculator

Tips: Enter your weight in kg, height in cm, and age in years. For accurate results, measure your weight and height in the morning before eating.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this BMR calculation?
A: The Mifflin-St Jeor equation is considered the most accurate for estimating BMR in healthy individuals, with about 90% accuracy.

Q2: Why is the equation different for men and women?
A: Men typically have more muscle mass and less body fat than women, resulting in a higher metabolic rate.

Q3: How often should I recalculate my BMR?
A: Recalculate whenever your weight changes significantly (5+ kg), or at least once a year as you age.

Q4: Does muscle mass affect BMR?
A: Yes, muscle tissue burns more calories at rest than fat tissue. Those with more muscle mass will have a higher BMR.

Q5: How can I use my BMR for weight management?
A: Multiply your BMR by an activity factor to estimate total daily calories needed, then adjust intake based on your goals (deficit for weight loss, surplus for gain).