1. What is Total Daily Energy Expenditure?

Total Daily Energy Expenditure (TDEE) is an estimate of how many calories you burn per day when exercise is taken into account. It is calculated by first establishing your Basal Metabolic Rate (BMR), then multiplying that value by an activity multiplier.

2. How Does the Calculator Work?

The calculator uses the TDEE formula:

Where:

• \( BMR \) — Basal Metabolic Rate (kcal/day)
• \( Activity\ Factor \) — Multiplier based on activity level (1.2-1.9)

Activity Levels:

• 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 a week): 1.725
• Extremely active (very hard exercise, physical job): 1.9

3. Importance of TDEE Calculation

Details: Knowing your TDEE is essential for weight management. To lose weight, you need to consume fewer calories than your TDEE; to gain weight, you need to consume more calories than your TDEE.

4. Using the Calculator

Tips: Enter your BMR in kcal/day and select your activity level from the dropdown menu. The calculator will then compute your estimated total daily energy expenditure.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between BMR and TDEE?
A: BMR is the number of calories your body needs to perform basic life-sustaining functions, while TDEE includes all calories burned through activity and exercise.

Q2: How accurate is the TDEE calculation?
A: It provides a good estimate but individual variations exist. Factors like genetics, body composition, and specific activities can affect actual energy expenditure.

Q3: Should I use my TDEE for weight loss?
A: Yes, creating a calorie deficit of 500-1000 calories below your TDEE typically results in a safe weight loss of 1-2 pounds per week.

Q4: How often should I recalculate my TDEE?
A: You should recalculate whenever your weight changes significantly (5+ pounds) or your activity level changes substantially.

Q5: Can TDEE change over time?
A: Yes, TDEE can decrease with weight loss (smaller body requires less energy) and increase with muscle gain (muscle tissue burns more calories at rest).