1. What is the TDEE Calculator?

The TDEE (Total Daily Energy Expenditure) Calculator estimates your daily calorie needs based on Precision Nutrition's adapted algorithm. It calculates both your Basal Metabolic Rate (BMR) and total energy expenditure including physical activity.

2. How Does the Calculator Work?

The calculator uses the following equations:

Where:

• \( weight \) — Body weight in kilograms (kg)
• \( height \) — Height in centimeters (cm)
• \( age \) — Age in years
• \( activity\ multiplier \) — Factor based on physical activity level

Activity Multipliers:

• 1.2 - Sedentary (little or no exercise)
• 1.375 - Lightly active (light exercise 1-3 days/week)
• 1.55 - Moderately active (moderate exercise 3-5 days/week)
• 1.725 - Very active (hard exercise 6-7 days/week)
• 1.9 - Extra active (very hard exercise, physical job)

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 your specific goals and activity level.

4. Using the Calculator

Tips: Enter your weight in kg, height in cm, age in years, select your gender, and choose the activity level that best matches your weekly exercise routine. All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between BMR and TDEE?
A: BMR (Basal Metabolic Rate) is the calories your body burns at complete rest, while TDEE (Total Daily Energy Expenditure) includes all calories burned through physical activity and digestion.

Q2: How accurate is this calculator?
A: This provides a good estimate based on established equations, but individual variations may occur due to factors like muscle mass, genetics, and metabolic health.

Q3: Should I use this for weight loss?
A: Yes, subtract 300-500 calories from your TDEE for gradual weight loss (0.5-1kg per week), or add 300-500 calories for weight gain.

Q4: How often should I recalculate my TDEE?
A: Recalculate every 4-6 weeks if your weight changes significantly, or if your activity level changes substantially.

Q5: Are there limitations to this calculation?
A: The calculation may be less accurate for athletes with very high muscle mass, elderly individuals, or those with certain medical conditions affecting metabolism.