1. What is TDEE vs BMR?

BMR (Basal Metabolic Rate) is the number of calories your body needs at complete rest, while TDEE (Total Daily Energy Expenditure) is the total calories you burn in a day including physical activity. TDEE is calculated by multiplying BMR by an activity factor.

2. How Does the Calculator Work?

The calculator uses the TDEE equation:

Where:

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

Explanation: The equation accounts for your base metabolic needs plus additional calories burned through daily activities and exercise.

3. Importance of TDEE Calculation

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

4. Using the Calculator

Tips: Enter your BMR in kcal/day and select your activity level. The calculator will estimate your total daily calorie needs.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculator?
A: It provides a good estimate but individual variations exist. For precise needs, consider professional metabolic testing.

Q2: What's the difference between BMR and RMR?
A: BMR is measured under stricter conditions than RMR (Resting Metabolic Rate), but they're often used interchangeably in calculators.

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

Q4: Why are there different activity factors?
A: Different activity levels burn different amounts of calories. More active people need more calories to maintain weight.

Q5: Can I use this for weight loss?
A: Yes, subtract 250-500 kcal from your TDEE for moderate weight loss (0.5-1 lb/week) while maintaining nutrition.