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. BMI screens for weight categories that may lead to health problems.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

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

Explanation: 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.

3. Importance of BMI Calculation

Details: BMI is an inexpensive and easy screening method for weight category—underweight, normal weight, overweight, and obesity. It correlates moderately well with body fat percentage.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

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

Q2: Is BMI different for women and men?
A: The same BMI ranges apply to both genders, though women tend to have more body fat than men at the same BMI.

Q3: What are BMI limitations?
A: BMI doesn't distinguish between muscle and fat, so athletes may be classified as overweight despite having low body fat.

Q4: How often should I check my BMI?
A: Periodic checks (every 6-12 months) can help track changes, but dramatic weight changes should prompt more frequent monitoring.

Q5: Is BMI accurate for pregnant women?
A: No, BMI calculations during pregnancy are not meaningful as weight gain is expected and necessary for fetal development.