1. What is BMI?

Body Mass Index (BMI) is a simple calculation using a person's height and weight. The formula is BMI = kg/m² where kg is a person's weight in kilograms and m² is their height in meters squared. It provides a reliable indicator of body fatness for most people.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

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

Explanation: BMI is calculated by dividing weight in kilograms by the square of height in meters.

3. Importance of BMI Calculation

Details: BMI is a simple, inexpensive screening method for weight category—underweight, healthy weight, overweight, and obesity. It's used to screen for potential health problems related to weight.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. All values must be valid (weight > 0, height > 0). For most accurate results, measure height without shoes and weight in light clothing.

5. Frequently Asked Questions (FAQ)

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

Q2: Are there limitations to BMI?
A: BMI doesn't directly measure body fat and doesn't account for muscle mass, bone density, or fat distribution. Athletes may have high BMI due to muscle rather than fat.

Q3: How often should I check my BMI?
A: For most adults, checking every few months is sufficient unless you're actively trying to lose or gain weight.

Q4: Does BMI apply to everyone?
A: BMI may not be accurate for children, pregnant women, the elderly, or very muscular individuals. Other measurements like waist circumference may be better indicators.

Q5: What should I do if my BMI is outside the healthy range?
A: Consult with a healthcare provider who can assess your overall health and recommend appropriate lifestyle changes or treatments.