1. What is BMI?

BMI (Body Mass Index) is a simple calculation using a person's height and weight to screen for weight categories that may lead to health problems.

2. How Does the Calculator Work?

The calculator uses the BMI formula:

Where:

• \( weight \) — Weight in kilograms (kg)
• \( height \) — Height in meters (m)

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

3. Importance of BMI Calculation

Details: BMI is used to screen for weight categories that may lead to health problems but it is not diagnostic of body fatness or health of an individual.

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

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

Q3: Why isn't age included in this calculator?
A: The standard BMI calculation doesn't use age. However, BMI interpretation may vary by age for children and teens.

Q4: What's the difference between UK and US BMI?
A: The calculation is identical, but some countries may use slightly different classification systems.

Q5: Should BMI be the only measure of health?
A: No, BMI should be considered along with other measurements like waist circumference and body composition.