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 a crucial metric 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
• \( height \) — Height in centimeters
• \( age \) — Age in years
• \( activity\ factor \) — Multiplier based on activity level (1.2-1.9)

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

3. Importance of TDEE Calculation

Details: Knowing your TDEE is essential for effective weight management. To lose weight, consume fewer calories than your TDEE; to gain weight, consume more. Maintaining weight requires matching your intake to your TDEE.

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: How accurate is this TDEE calculation?
A: The Mifflin-St Jeor formula is considered one of the most accurate BMR formulas for most people. When combined with appropriate activity multipliers, it provides a good estimate of TDEE.

Q2: Should I use this TDEE for weight loss?
A: Yes, subtract 300-500 calories from your TDEE for gradual weight loss of 0.5-1kg per week. For faster weight loss, consult a healthcare professional.

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

Q4: Why does the formula subtract 161?
A: This is part of the Mifflin-St Jeor equation constants that were derived from research studies to provide the most accurate estimation of metabolic rate.

Q5: Can athletes use this calculator?
A: Yes, but highly trained athletes with significant muscle mass may find their actual TDEE is slightly higher than calculated due to increased metabolic activity of muscle tissue.