1. What is BMR?

Basal Metabolic Rate (BMR) is the number of calories your body needs to maintain basic physiological functions at rest. It accounts for 60-75% of daily calorie expenditure.

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor Equation:

Where:

• \( Weight \) — Body weight in kilograms
• \( Height \) — Height in centimeters
• \( Age \) — Age in years

Explanation: The equation accounts for differences in metabolic rates between genders and how metabolism changes with age.

3. Importance of BMR Calculation

Details: Knowing your BMR helps create effective weight loss or gain plans by determining your baseline calorie needs.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: How does BMR differ from TDEE?
A: BMR is calories burned at complete rest. TDEE (Total Daily Energy Expenditure) includes activity and is typically 1.2-2.5× BMR.

Q2: How can I use BMR for weight loss?
A: Create a calorie deficit by consuming fewer calories than your TDEE (BMR × activity factor).

Q3: Does muscle mass affect BMR?
A: Yes, muscle tissue burns more calories at rest than fat tissue, so increased muscle mass raises BMR.

Q4: How often should I recalculate my BMR?
A: Recalculate after significant weight changes (±5kg) or every 6 months as metabolism changes with age.

Q5: Are there limitations to BMR equations?
A: Equations estimate average values. Individual variations can be ±10% due to genetics, body composition, and other factors.