1. What is Total Body Energy Expenditure?

Total Daily Energy Expenditure (TDEE) is the total number of calories you burn in a day, including your Basal Metabolic Rate (BMR) and activity level. It's crucial for weight management and nutrition planning.

2. How Does the Calculator Work?

The calculator uses the TDEE equation:

Where:

• \( BMR \) — Basal Metabolic Rate (calories burned at rest)
• \( activity\_factor \) — Multiplier based on activity level

Explanation: The equation accounts for your basic metabolic needs plus the additional calories burned through physical activity.

3. Importance of TDEE Calculation

Details: Knowing your TDEE helps with weight management - consuming fewer calories than your TDEE leads to weight loss, while consuming more leads to weight gain.

4. Using the Calculator

Tips: Enter your BMR in kcal/day and select your activity level. For accurate results, use a recent BMR calculation.

5. Frequently Asked Questions (FAQ)

Q1: How is BMR different from TDEE?
A: BMR represents calories burned at complete rest, while TDEE includes all daily activities and exercise.

Q2: How often should I recalculate my TDEE?
A: Recalculate whenever your weight changes significantly (5+ lbs) or your activity level changes substantially.

Q3: What's the most accurate way to determine BMR?
A: Laboratory testing is most accurate, but online calculators using the Mifflin-St Jeor equation provide good estimates.

Q4: Why does TDEE matter for weight loss?
A: To lose weight, you need to consume fewer calories than your TDEE (typically 300-500 fewer per day for gradual loss).

Q5: Can TDEE change day to day?
A: Yes, based on activity levels. This calculator provides an average estimate for typical activity patterns.