1. What is the Weight Loss Calculator?

This calculator estimates your daily calorie needs for weight loss based on your weight, height, age (calculated from date of birth), activity level, and desired calorie deficit.

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor Equation:

Where:

• \( weight \) — Body weight in kilograms
• \( height \) — Height in centimeters
• \( age \) — Age in years (calculated from date of birth)
• \( activity\_factor \) — Multiplier based on activity level
• \( deficit \) — Daily calorie deficit for weight loss

Explanation: The equation calculates your Basal Metabolic Rate (BMR), adjusts for activity level, then subtracts your desired deficit to determine weight loss calories.

3. Importance of Calorie Calculation

Details: Accurate calorie calculation is crucial for effective weight loss while maintaining health and energy levels. Too large a deficit can be harmful.

4. Using the Calculator

Tips: Enter your current weight in kg, height in cm, date of birth, current date, select your activity level, and choose a reasonable calorie deficit (typically 300-500 kcal/day).

5. Frequently Asked Questions (FAQ)

Q1: What's a safe calorie deficit?
A: Generally 300-500 kcal/day for steady weight loss (0.5-1 kg/week). Larger deficits should be medically supervised.

Q2: How accurate is this calculation?
A: It provides a good estimate but individual metabolism varies. Adjust based on actual weight changes.

Q3: Should I eat exactly these calories?
A: Use this as a starting point. Monitor your progress and adjust as needed.

Q4: How often should I recalculate?
A: Recalculate every 5-10 kg of weight loss or if your activity level changes significantly.

Q5: What if I'm not losing weight?
A: Double-check your inputs, track food accurately, consider medical conditions, or consult a professional.