1. What is BMI?

Body Mass Index (BMI) is a simple calculation using a person's height and weight. It provides a numeric value that helps categorize weight status and estimate body fat.

2. How Does the Calculator Work?

The calculator uses the BMI formula:

Where:

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

Explanation: The formula divides weight by the square of height to account for the relationship between height and body surface area.

3. Importance of BMI Calculation

Details: BMI helps screen for weight categories that may lead to health problems. It also provides calorie estimates for healthy weight loss (typically 500-1000 kcal deficit per day).

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. For accurate results, measure height without shoes and weight with minimal clothing.

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 adults with lost muscle mass.

Q3: How much should I reduce calories to lose weight?
A: A deficit of 500-1000 kcal/day typically leads to 0.5-1 kg weight loss per week.

Q4: Should I use BMI if I'm very muscular?
A: Additional measurements like waist circumference or body fat percentage may be more appropriate.

Q5: Why does the calculator show a calorie range?
A: The range accounts for different weight loss speeds (0.5-1 kg/week) based on your goals.