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, and overweight in adults. It is defined as the weight in kilograms divided by the square of the height in meters (kg/m²).

2. How Does the Calculator Work?

The calculator uses the BMI formula:

Where:

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

Classification:

• Underweight: BMI < 18.5 kg/m²
• Normal weight: BMI 18.5-24.9 kg/m²
• Overweight: BMI ≥ 25 kg/m²

3. Importance of BMI Calculation

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

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Is BMI accurate for everyone?
A: BMI may not be accurate for athletes (who may have high muscle mass), pregnant women, children, or the elderly.

Q2: What's a healthy BMI range?
A: For most adults, 18.5 to 24.9 is considered healthy. However, optimal BMI may vary by age and ethnicity.

Q3: Should I use pounds and inches?
A: The calculator uses metric units. For imperial units: BMI = (weight in pounds × 703) / (height in inches)².

Q4: What if my BMI shows I'm overweight?
A: Consult a healthcare professional for personalized advice. BMI is just a screening tool.

Q5: Are there better measures than BMI?
A: Waist circumference and body fat percentage may provide additional information about health risks.