1. What is TDEE?

Total Daily Energy Expenditure (TDEE) represents the total number of calories your body burns in a day, including basal metabolic rate and physical activity. It's the most accurate way to determine your daily calorie needs.

2. How Does the Calculator Work?

The calculator uses the most accurate TDEE formula:

Where:

• \( \text{lean mass} \) — Body weight minus fat mass (kg)
• \( \text{activity} \) — Activity multiplier based on daily physical activity level

Explanation: This formula provides the most accurate estimation of total daily calorie expenditure by focusing on lean body mass and activity level.

3. Importance of TDEE Calculation

Details: Accurate TDEE calculation is essential for weight management, muscle building, fat loss programs, and maintaining optimal energy balance for athletic performance.

4. Using the Calculator

Tips: Enter your lean mass in kilograms and select your appropriate activity level. For best results, use accurate body composition measurements.

5. Frequently Asked Questions (FAQ)

Q1: Why is this considered the most accurate TDEE formula?
A: This formula uses lean body mass rather than total body weight, providing a more precise calculation of metabolic rate and energy expenditure.

Q2: How do I calculate my lean mass?
A: Lean mass = Total weight - Fat mass. Use body composition scans (DEXA), bioelectrical impedance, or skinfold measurements for accuracy.

Q3: What activity level should I choose?
A: Select based on your daily routine: Sedentary (office work), Lightly Active (light exercise 1-3 days/week), Moderately Active (moderate exercise 3-5 days/week), Very Active (hard exercise 6-7 days/week), Extremely Active (athlete training multiple times daily).

Q4: How often should I recalculate my TDEE?
A: Recalculate every 4-6 weeks or whenever your body composition or activity level changes significantly.

Q5: Can this formula be used for weight loss/gain?
A: Yes, subtract 500 kcal/day for weight loss or add 500 kcal/day for weight gain from your calculated TDEE.