1. What is TDEE?

TDEE (Total Daily Energy Expenditure) represents the total number of calories you burn in a day, accounting for your basal metabolic rate (BMR) and physical activity. It's the number of calories needed to maintain your current weight.

2. How Does the Calculator Work?

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

Where BMR is calculated as:

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

Activity Factors:

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

3. Importance of TDEE Calculation

Details: Knowing your TDEE helps with weight management - consuming more than your TDEE leads to weight gain, while consuming less leads to weight loss.

4. Using the Calculator

Tips: Enter your accurate weight in kg, height in cm, age in years, and select your typical activity level. For accurate results, measure your weight and height rather than estimating.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculator?
A: It provides a good estimate for most people, but individual variations in metabolism can affect actual TDEE.

Q2: Should I eat exactly my TDEE to maintain weight?
A: TDEE is an estimate - monitor your weight over time and adjust calories as needed.

Q3: How often should I recalculate my TDEE?
A: Recalculate whenever your weight changes significantly or your activity level changes.

Q4: Does muscle mass affect TDEE?
A: Yes, muscle burns more calories at rest than fat, so those with more muscle mass typically have higher TDEE.

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