1. What is the Harris-Benedict Equation?

The Harris-Benedict Equation estimates Basal Metabolic Rate (BMR), which represents the number of calories your body needs at complete rest. When multiplied by an activity factor, it calculates Total Daily Energy Expenditure (TDEE) - the total calories you burn in a day including physical activity.

2. How Does the Calculator Work?

The calculator uses the Harris-Benedict equation for women:

Where:

• \( weight \) — Body weight in kilograms (kg)
• \( height \) — Height in centimeters (cm)
• \( age \) — Age in years
• \( activity\_factor \) — Multiplier based on activity level

Explanation: The equation calculates your basal metabolic rate (BMR) and then multiplies it by an activity factor to estimate your total daily calorie needs.

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.

4. Using the Calculator

Tips: Enter your weight in kg, height in cm, age in years, and select your activity level. Be honest about your activity level for accurate results.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is the Harris-Benedict equation?
A: It's reasonably accurate for most people but may be ±10-15% off for individuals with very high or very low body fat percentages.

Q2: What's the difference between BMR and TDEE?
A: BMR is calories burned at complete rest, while TDEE includes all daily activities and exercise.

Q3: Should I use this if I'm pregnant?
A: No, the equation doesn't account for pregnancy. Consult your doctor for nutritional guidance during pregnancy.

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

Q5: Is there a different equation for men?
A: Yes, men should use: BMR = 66 + (13.7 × weight) + (5 × height) - (6.8 × age)