1. What is TDEE?

TDEE (Total Daily Energy Expenditure) represents the total number of calories your body burns in a day, including basal metabolic rate (BMR) and calories burned through physical activity. It's a crucial metric for weight management and nutrition planning.

2. How Does the Calculator Work?

The calculator uses the TDEE formula:

Where:

• \( BMR \) — Basal Metabolic Rate (kcal/day)
• \( Activity\ Multiplier \) — Sedentary: 1.2, Light: 1.375, Moderate: 1.55, Very Active: 1.725, Extra Active: 1.9

Explanation: The equation accounts for your body's baseline energy needs (BMR) multiplied by your activity level to determine total daily calorie expenditure.

3. Importance of TDEE Calculation

Details: Knowing your TDEE is essential for creating effective diet plans, whether your goal is weight loss, maintenance, or muscle gain. It provides a scientific basis for determining your daily calorie needs.

4. Using the Calculator

Tips: Enter your BMR in kcal/day and select your activity level based on your daily physical activity. All values must be valid (BMR > 0).

5. Frequently Asked Questions (FAQ)

Q1: How do I calculate my BMR?
A: BMR can be calculated using formulas like Mifflin-St Jeor or Harris-Benedict, which consider age, weight, height, and gender.

Q2: What's the most accurate activity multiplier?
A: Choose the multiplier that best matches your daily activity level. Be honest about your activity to get the most accurate TDEE estimate.

Q3: How often should I recalculate my TDEE?
A: Recalculate whenever your weight changes significantly (±5kg/10lbs) or your activity level changes substantially.

Q4: Why is my calculated TDEE different from fitness trackers?
A: Different algorithms and individual variations can cause discrepancies. This calculator provides a scientifically-based estimate.

Q5: Can TDEE change over time?
A: Yes, TDEE changes with weight, age, muscle mass, and activity level. Regular reassessment is recommended.