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 and physical activity. It's crucial for weight management and nutrition planning.

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor formula with activity multiplier:

Where:

• \( weight \) — Body weight in kilograms (kg)
• \( height \) — Height in centimeters (cm)
• \( age \) — Age in years
• \( activity\ factor \) — Multiplier based on activity level (1.2-1.9)

Explanation: The formula calculates your basal metabolic rate (BMR) and then multiplies it by your activity level to estimate total daily energy expenditure.

3. Importance of TDEE Calculation

Details: Knowing your TDEE helps in creating effective weight loss or weight gain plans. To lose weight, consume fewer calories than your TDEE; to gain weight, consume more.

4. Using the Calculator

Tips: Enter your accurate weight in kg, height in cm, age in years, and select your activity level based on your weekly exercise routine. All values must be valid and positive.

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 TDEE calculation?
A: It provides a good estimate, but individual variations exist due to metabolism, body composition, and other factors.

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

Q4: How often should I recalculate my TDEE?
A: Recalculate when your weight changes significantly (±5kg) or your activity level changes substantially.

Q5: Can TDEE change with age?
A: Yes, metabolism typically slows with age, so your TDEE may decrease over time even with the same weight and activity level.