1. What is the Calorie Equation?

The calorie equation estimates daily calorie needs for a 25-year-old male based on weight, height, and activity level. It's derived from the Mifflin-St Jeor equation with a fixed age factor.

2. How Does the Calculator Work?

The calculator uses the following equation:

Where:

• \( weight \) — Body weight in kilograms
• \( height \) — Height in centimeters
• \( activity\_factor \) — Multiplier based on activity level
• 25 — Fixed age in the equation
• 5 — Gender adjustment for male

Explanation: The equation calculates basal metabolic rate adjusted for activity level to estimate total daily energy expenditure.

3. Importance of Calorie Calculation

Details: Accurate calorie estimation helps in weight management, whether for weight loss, maintenance, or muscle gain. It serves as a starting point for dietary planning.

4. Using the Calculator

Tips: Enter weight in kg, height in cm, and select your activity level. For accurate results, use morning measurements before eating.

5. Frequently Asked Questions (FAQ)

Q1: Why is age fixed at 25?
A: This calculator is specifically designed for 25-year-old males. The equation includes the age adjustment factor (-5 × 25) built in.

Q2: What are typical calorie needs?
A: For a 25-year-old male, typically 2000-3000 kcal/day depending on size and activity level.

Q3: How accurate is this estimate?
A: It provides a reasonable estimate but individual variations exist. Consider it a starting point and adjust based on results.

Q4: Can I use this if I'm not exactly 25?
A: The calculation is optimized for 25-year-olds. For other ages, use a general calorie calculator.

Q5: What activity factor should I choose?
A: Sedentary (office job), Lightly Active (light exercise 1-3 days/week), Moderately Active (moderate exercise 3-5 days/week), Very Active (hard exercise 6-7 days/week), Extra Active (very hard exercise & physical job).