1. What is TDEE and BMR?

BMR (Basal Metabolic Rate) is the number of calories your body needs to perform basic life-sustaining functions. TDEE (Total Daily Energy Expenditure) is the total number of calories you burn in a day, 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
• \( activity\ factor \) — 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
• Extremely Active (very hard exercise, physical job): 1.9

3. Importance of TDEE and BMR Calculation

Details: Understanding your BMR and TDEE is essential for weight management, creating effective diet plans, and setting appropriate calorie goals for weight loss, maintenance, or gain.

4. Using the Calculator

Tips: Enter your weight in kg, height in cm, age in years, and select your activity level. All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

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

Q2: How accurate is this calculator?
A: This provides a good estimate, but individual variations in metabolism may affect actual calorie needs.

Q3: Should I use BMR or TDEE for weight loss?
A: Use TDEE to determine maintenance calories, then create a deficit from that number for weight loss.

Q4: How often should I recalculate my TDEE?
A: Recalculate when your weight changes significantly (±5kg) or your activity level changes substantially.

Q5: Are there other factors that affect BMR?
A: Yes, factors like muscle mass, hormones, and genetics can influence your actual metabolic rate.