1. What is the BMR Equation?

The BMR (Basal Metabolic Rate) equation estimates 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
• \( s \) — Gender adjustment factor (5 for men, -161 for women)

Explanation: The equation calculates the basal metabolic rate based on body size, age, and gender, providing an estimate of daily calorie needs at complete rest.

3. Importance of BMR Calculation

Details: Accurate BMR estimation is crucial for weight management, diet planning, and understanding your body's energy requirements. It serves as the foundation for calculating total daily energy expenditure when combined with activity level.

4. Using the Calculator

Tips: Enter weight in kilograms, height in centimeters, age in years, and select gender. All values must be valid (weight > 0, height > 0, age between 1-120).

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between BMR and TDEE?
A: BMR represents calories burned at complete rest, while TDEE (Total Daily Energy Expenditure) includes all daily activities and is calculated by multiplying BMR by an activity factor.

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

Q3: Why does BMR decrease with age?
A: BMR typically decreases with age due to loss of muscle mass, hormonal changes, and decreased metabolic activity in organs.

Q4: Can I use BMR for weight loss planning?
A: Yes, BMR is the starting point for creating calorie deficit plans. For weight loss, consume fewer calories than your total daily energy expenditure.

Q5: How often should I recalculate my BMR?
A: Recalculate when there are significant changes in weight, age, or body composition, typically every few months or after substantial weight changes.