1. What is This Calorie Calculator?

This calculator estimates the daily calorie needs for men who want to lose weight, based on the Mifflin-St Jeor equation with a 500 kcal deficit for weight loss.

2. How Does the Calculator Work?

The calculator uses the following equation:

Where:

• \( weight \) — Body weight in kilograms
• \( height \) — Height in centimeters
• \( age \) — Age in years
• \( activity\_factor \) — Multiplier based on physical activity level
• \( -500 \) — Calorie deficit for weight loss

Explanation: The equation calculates basal metabolic rate (BMR), adjusts for activity level, then subtracts 500 kcal to create a weight loss deficit.

3. Importance of Calorie Calculation

Details: Accurate calorie estimation is crucial for effective weight loss while maintaining muscle mass and energy levels.

4. Using the Calculator

Tips: Enter weight in kg, height in cm, age in years, and select your activity level. All values must be valid (weight > 0, height > 0, age between 1-120).

5. Frequently Asked Questions (FAQ)

Q1: Why subtract 500 calories?
A: A 500 kcal daily deficit typically results in about 0.5 kg (1 lb) of weight loss per week, a safe and sustainable rate.

Q2: Is this calculator only for men?
A: Yes, this specific equation is for men. Women should use a different equation that accounts for their metabolic differences.

Q3: How accurate is this calculation?
A: It provides a good estimate but individual variations exist. Adjust based on actual weight loss results.

Q4: Should I eat exactly these calories?
A: Use this as a starting point. Monitor progress and adjust as needed with professional guidance.

Q5: What if I'm not losing weight at this calorie level?
A: You may need to further reduce calories or increase activity, but consult a healthcare provider first.