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 figuring out 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

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 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. Make sure to use an accurate BMR value for the most precise TDEE calculation.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between BMR and TDEE?
A: BMR is the number of calories your body needs at complete rest, while TDEE includes all daily activities and exercise.

Q2: How accurate is this TDEE calculation?
A: It provides a good estimate, but individual variations in metabolism and activity patterns can affect accuracy.

Q3: Should I use my sedentary TDEE or active TDEE for weight loss?
A: Use the TDEE that matches your actual activity level for the most accurate calorie targets.

Q4: How often should I recalculate my TDEE?
A: Recalculate whenever your weight changes significantly or your activity level changes substantially.

Q5: Can TDEE change over time?
A: Yes, TDEE can change with weight loss/gain, aging, changes in muscle mass, and changes in activity levels.