1. What is Basal Metabolic Rate (BMR)?

Basal Metabolic Rate (BMR) represents the number of calories your body burns at rest to maintain vital functions like breathing, circulation, and cell production. It's the minimum energy required to keep your body functioning while at complete rest.

2. How Does the Calculator Work?

The calculator uses the BMR equation:

Where:

• \( W \) — Weight in kilograms (kg)
• \( H \) — Height in centimeters (cm)
• \( A \) — Age in years
• \( +5 \) — Male constant adjustment
• \( -161 \) — Female constant adjustment

Explanation: This equation estimates your body's energy expenditure at complete rest, accounting for weight, height, age, and gender differences in metabolism.

3. Importance of BMR Calculation

Details: Knowing your BMR is essential for weight management, creating effective diet plans, and understanding your body's basic energy needs. It serves as the foundation for calculating total daily energy expenditure (TDEE).

4. Using the Calculator

Tips: Enter your current weight in kg, height in cm, age in years, and select your gender. For accurate results, use recent measurements and ensure all values are valid (weight > 0, height > 0, age 1-120).

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between BMR and RMR?
A: BMR measures energy expenditure at complete rest in a fasting state, while RMR (Resting Metabolic Rate) is measured under less strict conditions and is typically slightly higher.

Q2: How accurate is this BMR calculation?
A: This provides a good estimate for most people, but individual variations in muscle mass, body composition, and genetics can affect actual BMR.

Q3: Can I increase my BMR?
A: Yes, through strength training to build muscle mass, proper nutrition, adequate sleep, and staying hydrated. Muscle tissue burns more calories at rest than fat tissue.

Q4: How does age affect BMR?
A: BMR typically decreases with age due to loss of muscle mass and hormonal changes, which is why the equation includes an age adjustment factor.

Q5: Should I eat below my BMR to lose weight?
A: No, eating below your BMR is not recommended as it can slow metabolism and cause muscle loss. Instead, create a modest calorie deficit based on your TDEE.