1. What is TDEE?

Total Daily Energy Expenditure (TDEE) is the total number of calories you burn in a day, including basal metabolic rate (BMR) and activity. This calculator uses body fat percentage for more accurate BMR estimation than weight-only formulas.

2. How Does This Calculator Work?

The calculator uses these equations:

Where:

• \( weight \) — Body weight in kilograms
• \( body\_fat \) — Body fat percentage
• \( activity\_factor \) — Multiplier based on activity level

Explanation: The equation calculates BMR based on lean body mass (weight minus fat mass), then multiplies by activity factor to estimate total daily calorie needs.

3. Importance of Accurate TDEE Calculation

Details: Knowing your TDEE helps with weight management - eating below TDEE leads to weight loss, eating above leads to weight gain. Body fat-based calculation is more precise than weight-only methods.

4. Using the Calculator

Tips: For best results, use an accurate body fat measurement (DEXA scan, calipers, or bioelectrical impedance). Select your typical activity level honestly.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculator?
A: More accurate than weight-only formulas, but still an estimate. Individual variations in metabolism can affect actual TDEE.

Q2: Why use body fat percentage?
A: Muscle is more metabolically active than fat. Two people at the same weight but different body fat percentages have different calorie needs.

Q3: How often should I recalculate?
A: Recalculate whenever your weight or body composition changes significantly, or if your activity level changes.

Q4: What if I don't know my body fat percentage?
A: Consider getting it measured, or use a weight-only TDEE calculator as a rough estimate.

Q5: Can I use this for weight loss?
A: Yes, subtract 250-500 kcal from your TDEE for moderate weight loss (0.25-0.5 kg/week).