1. What is Basal Metabolic Rate (BMR)?

Basal Metabolic Rate (BMR) is the number of calories your body needs to perform basic life-sustaining functions while at complete rest. This includes breathing, circulation, cell production, and nutrient processing.

2. How Does the Calculator Work?

The calculator uses the NHS BMR formula:

Where:

• Weight — Body weight in kilograms (kg)
• Height — Height in centimeters (cm)
• Age — Age in years
• Gender — Biological sex (male/female)

Explanation: The equation accounts for the basic energy requirements based on body size, 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 forms the foundation for calculating total daily energy expenditure.

4. Using the Calculator

Tips: Enter your weight in kilograms, height in centimeters, age in years, and select your gender. All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between BMR and TDEE?
A: BMR is the calories burned at complete rest, while TDEE (Total Daily Energy Expenditure) includes all activities and is typically higher than BMR.

Q2: How accurate is the NHS BMR formula?
A: The NHS formula provides a good estimate for most people, but individual variations in metabolism may affect accuracy.

Q3: When should I measure my BMR?
A: For most accurate results, measure after waking up, before eating or drinking, and after a good night's sleep.

Q4: Does muscle mass affect BMR?
A: Yes, muscle tissue burns more calories at rest than fat tissue, so individuals with more muscle mass typically have higher BMR.

Q5: How often does BMR change?
A: BMR changes with age, weight fluctuations, muscle mass changes, and overall health status. It's recommended to recalculate periodically.