1. What is BMI?

BMI (Body Mass Index) is a simple index of weight-for-height that is commonly used to classify underweight, normal weight, overweight and obesity in adults.

2. How Does the Calculator Work?

The calculator uses the BMI formula:

Where:

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

Explanation: BMI provides a simple numeric measure of a person's thickness or thinness, allowing health professionals to discuss weight problems objectively with their patients.

3. Importance of BMI Calculation

Details: BMI is a simple, inexpensive, and noninvasive surrogate measure of body fat that correlates with direct measures of body fat. It is used to screen for weight categories that may lead to health problems.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. All values must be valid (weight > 0, height > 0).

5. Frequently Asked Questions (FAQ)

Q1: What is a healthy BMI range?
A: For adults, a healthy weight is a BMI of 18.5 to 24.9.

Q2: Does BMI apply to everyone?
A: BMI may not be accurate for athletes (who may have high muscle mass), pregnant women, children, or the elderly.

Q3: What are the BMI categories?
A: Underweight (BMI < 18.5), Normal weight (18.5-24.9), Overweight (25-29.9), Obese (≥30).

Q4: Why is BMI important?
A: Higher BMI increases risk of diseases like type 2 diabetes, heart disease, and certain cancers.

Q5: Should BMI be the only measure of health?
A: No, waist circumference and other factors should also be considered for a complete health assessment.