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 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 BMR equation:

Where:

• \( Weight \) — Body weight in kilograms (kg)
• \( Height \) — Height in centimeters (cm)
• \( Age \) — Age in years
• 5 — Additional calories for men
• -161 — Adjustment for women

Explanation: This equation accounts for the fundamental metabolic differences between genders and the natural decline in metabolic rate with age.

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 serves as 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 (weight > 0, height > 0, age between 1-120).

5. Frequently Asked Questions (FAQ)

Q1: What factors affect BMR?
A: BMR is influenced by age, gender, body composition, genetics, and hormonal factors. Muscle mass increases BMR while fat decreases it.

Q2: How accurate is this BMR calculation?
A: While this formula provides a good estimate, individual variations exist. For precise measurements, specialized equipment like metabolic carts are used.

Q3: How often does BMR change?
A: BMR decreases with age (about 1-2% per decade after age 20) and changes with significant weight loss/gain or muscle mass changes.

Q4: Can I increase my BMR?
A: Yes, through regular exercise (especially strength training), building muscle mass, and maintaining proper nutrition.

Q5: How is BMR different from TDEE?
A: BMR is the calories burned at complete rest, while Total Daily Energy Expenditure (TDEE) includes all daily activities and exercise.