1. What is TDEE Calculator?

The TDEE (Total Daily Energy Expenditure) Calculator estimates your daily calorie needs based on the Mifflin-St Jeor equation. It calculates both BMR (Basal Metabolic Rate) and TDEE using your weight, height, age, gender, and activity level.

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
• \( activity\ multiplier \) — Sedentary: 1.2, Light: 1.375, Moderate: 1.55, Very Active: 1.725, Extra Active: 1.9

Explanation: The equation estimates your basal metabolic rate (calories burned at rest) and multiplies it by your activity level to determine 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 you determine appropriate calorie intake for your goals.

4. Using the Calculator

Tips: Enter your weight in kg, height in cm, age in years, select gender and activity level. 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 is the calories your body burns at complete rest, while TDEE includes all daily activities and exercise.

Q2: How accurate is the Mifflin-St Jeor equation?
A: It's considered one of the most accurate BMR equations for the general population, with about 80-90% accuracy.

Q3: Should I use metric or imperial measurements?
A: This calculator uses metric measurements (kg and cm) for better accuracy with the equation.

Q4: How often should I recalculate my TDEE?
A: Recalculate every 4-6 weeks or after significant weight changes (±5 kg).

Q5: Can this calculator be used for athletes?
A: While it provides a good estimate, athletes with very high muscle mass may need specialized calculations.