1. What is the Harris-Benedict Equation?

The Harris-Benedict Equation is a method used to estimate an individual's basal metabolic rate (BMR) and total daily energy expenditure (TDEE). The equation for men calculates the number of calories your body needs at rest, which is then adjusted based on your activity level.

2. How Does the Calculator Work?

The calculator uses the Harris-Benedict equation for men:

Where:

• \( weight \) — Body weight in kilograms (kg)
• \( height \) — Height in centimeters (cm)
• \( age \) — Age in years
• \( activity\ factor \) — Multiplier based on activity level (1.2-1.9)

Explanation: The equation first calculates your basal metabolic rate (BMR), then multiplies it by an activity factor to estimate your total daily energy expenditure.

3. Importance of TDEE Calculation

Details: Knowing your TDEE is essential for weight management, whether your goal is weight loss, maintenance, or muscle gain. It helps determine appropriate calorie intake for your specific needs and activity level.

4. Using the Calculator

Tips: Enter your weight in kg, height in cm, age in years, and select your activity level. All values must be valid (weight > 0, height > 0, age between 1-120, activity factor selected).

5. Frequently Asked Questions (FAQ)

Q1: How accurate is the Harris-Benedict equation?
A: While it provides a good estimate for most people, individual variations in metabolism mean it may not be 100% accurate for everyone.

Q2: What's the difference between BMR and TDEE?
A: BMR is the calories your body burns at complete rest, while TDEE includes all daily activities and exercise.

Q3: How often should I recalculate my TDEE?
A: Recalculate every 4-6 weeks or whenever your weight, activity level, or goals change significantly.

Q4: Are there limitations to this equation?
A: It may be less accurate for extremely muscular individuals, those with very high body fat percentages, or people with certain medical conditions affecting metabolism.

Q5: Should I use this for weight loss planning?
A: Yes, but remember that creating a calorie deficit of 500-1000 calories per day typically results in safe weight loss of 0.5-1 kg per week.