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 (BMR) and calories burned through physical activity. It's essential for optimal nutrition planning and weight management.

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor equation for BMR and multiplies by activity level:

Where BMR is calculated as:

• For men: \( BMR = 10 \times weight + 6.25 \times height - 5 \times age + 5 \)
• For women: \( BMR = 10 \times weight + 6.25 \times height - 5 \times age - 161 \)

Activity multipliers:

• Sedentary (little or no exercise): 1.2
• Light (light exercise 1-3 days/week): 1.375
• Moderate (moderate exercise 3-5 days/week): 1.55
• Very (hard exercise 6-7 days/week): 1.725
• Extra (very hard exercise & physical job): 1.9

3. Importance of TDEE Calculation

Details: Knowing your TDEE is crucial for weight management, whether your goal is weight loss, maintenance, or muscle gain. It helps determine appropriate calorie intake for optimal nutrition planning.

4. Using the Calculator

Tips: Enter 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'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.

Q2: How accurate is this calculator?
A: It provides a good estimate, but individual variations exist due to metabolism, body composition, and other factors.

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

Q4: Can TDEE change over time?
A: Yes, TDEE decreases with age and weight loss, and increases with muscle gain and increased activity.

Q5: Should I eat at my TDEE for weight maintenance?
A: Yes, consuming calories equal to your TDEE should maintain your current weight. For weight loss, consume fewer calories; for weight gain, consume more.