1. What is BMR?

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

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
• \( s \) — +5 for males, -161 for females

Explanation: This equation is currently considered the most accurate for estimating BMR in healthy individuals.

3. Importance of BMR Calculation

Details: Knowing your BMR helps determine your daily caloric needs for weight maintenance, loss, or gain. It's the foundation for calculating Total Daily Energy Expenditure (TDEE).

4. Using the Calculator

Tips: For most accurate results, measure your weight and height precisely. Input your current age. Select your biological sex as the equation uses different coefficients for males and females.

5. Frequently Asked Questions (FAQ)

Q1: How does BMR differ from TDEE?
A: BMR accounts for only basic bodily functions at complete rest, while TDEE includes all daily activities and exercise.

Q2: What are typical BMR values?
A: Average BMR ranges from 1,400-1,800 kcal/day for women and 1,600-2,000 kcal/day for men, but varies by individual.

Q3: 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.

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

Q5: Are there limitations to this equation?
A: It may be less accurate for extremely muscular individuals, those with very high body fat percentages, or elderly populations.