1. What is a BMI Calculator?

Definition: This calculator estimates Body Mass Index (BMI) based on weight and height measurements.

Purpose: It helps individuals assess whether their weight is in a healthy range relative to their height.

2. How Does the BMI Calculator Work?

The calculator uses the formula:

Where:

• \( BMI \) — Body Mass Index (kg/m²)
• \( W \) — Weight (kilograms)
• \( H \) — Height (meters)

Explanation: The weight is divided by the square of height to calculate the body mass index.

3. Importance of BMI Calculation

Details: BMI is a simple screening tool that may indicate weight categories that could lead to health problems.

4. Using the Calculator

Tips: Enter your weight in kilograms and height in meters. All values must be > 0.

5. BMI Categories

Underweight: BMI less than 18.5
Normal weight: BMI 18.5 to 24.9
Overweight: BMI 25 to 29.9
Obesity: BMI 30 or greater

6. Frequently Asked Questions (FAQ)

Q1: Is BMI accurate for everyone?
A: BMI may not accurately reflect body fat in athletes (high muscle mass) or elderly (muscle loss).

Q2: What units should I use?
A: Weight in kilograms and height in meters for accurate BMI calculation.

Q3: How can I convert pounds to kilograms?
A: Divide pounds by 2.205 to get kilograms (1 kg = 2.205 lbs).

Q4: How can I convert feet/inches to meters?
A: 1 foot = 0.3048 meters, 1 inch = 0.0254 meters.

Q5: Should children use this calculator?
A: Children's BMI is interpreted differently - consult a pediatrician for age-specific charts.