1. What is BMI?

Body Mass Index (BMI) is a value derived from the mass and height of a person. It provides a simple numeric measure of a person's thickness or thinness, allowing health professionals to discuss weight problems objectively with their patients.

2. How Does the Calculator Work?

The calculator uses the BMI formula:

Where:

• \( weight \) — Body weight in kilograms
• \( height \) — Height in meters

Calorie Calculation: The calculator also estimates daily calorie needs using the Mifflin-St Jeor equation and activity factors, then suggests a weight loss calorie target (500 calorie deficit).

3. Importance of BMI and Calorie Calculation

Details: BMI helps categorize weight status and potential health risks. Calorie estimation helps create effective weight management plans.

4. Using the Calculator

Tips: Enter weight in kg, height in meters, and select your activity level. For accurate results, measure weight in the morning after using the bathroom and before eating.

5. Frequently Asked Questions (FAQ)

Q1: What are the BMI categories?
A: Underweight (<18.5), Normal (18.5-24.9), Overweight (25-29.9), Obese (≥30).

Q2: Is BMI accurate for everyone?
A: BMI may overestimate body fat in athletes and underestimate it in older people with lost muscle mass.

Q3: How much weight will I lose with 500 calorie deficit?
A: About 0.5kg (1lb) per week, as 1kg fat ≈ 7700 calories.

Q4: Should I eat exactly these calories?
A: These are estimates. Individual needs vary based on metabolism, hormones, and other factors.

Q5: What's the healthiest way to create a calorie deficit?
A: Combine moderate calorie reduction with increased physical activity for sustainable weight loss.