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 a crucial metric for weight management and nutritional planning.

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor equation with activity factor:

Where:

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

Explanation: This equation calculates your basal metabolic rate first, then multiplies it by your activity level to estimate total daily energy expenditure.

3. Importance of TDEE Calculation

Details: Knowing your TDEE helps you determine appropriate calorie intake for weight loss, maintenance, or muscle gain. It provides a scientific basis for creating effective diet and exercise plans.

4. Using the Calculator

Tips: Enter your weight in kg, height in cm, age in years, and select your activity level based on your typical weekly exercise routine. Be honest about your activity level for accurate results.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between BMR and TDEE?
A: BMR (Basal Metabolic Rate) 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: The Mifflin-St Jeor equation is considered one of the most accurate formulas for estimating energy expenditure, though individual variations exist.

Q3: Should I adjust my calorie intake based on TDEE?
A: For weight loss, consume 300-500 calories below TDEE; for weight gain, consume 300-500 calories above TDEE; for maintenance, match your TDEE.

Q4: How often should I recalculate my TDEE?
A: Recalculate every 4-6 weeks or after significant weight changes (±5kg) or changes in activity level.

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