1. What is BMI?

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

• \( weight \) — Weight in pounds (converted from kg)
• \( height \) — Height in inches
• 703 — Conversion factor

Explanation: This calculator automatically converts your weight from kilograms to pounds before calculating your BMI based on height in inches.

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 inches. The calculator will automatically convert kg to pounds and compute your BMI.

5. Frequently Asked Questions (FAQ)

Q1: What is a healthy BMI range?
A: For adults, a BMI between 18.5 and 24.9 is considered healthy. Below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese.

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

Q3: Why convert kg to pounds in this calculator?
A: The standard BMI formula for inches/pounds uses the conversion factor 703 to adjust the units.

Q4: How often should I check my BMI?
A: For most adults, checking BMI every few months is sufficient unless you're actively trying to lose or gain weight.

Q5: Does BMI measure body fat?
A: BMI is a surrogate measure of body fat for most people, but doesn't directly measure body fat percentage.