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, overweight and obesity in adults. It is calculated by dividing a person's weight in kilograms by the square of their height in meters.

2. How Does the Calculator Work?

The calculator uses the BMI formula:

Where:

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

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, healthy weight, overweight, and obesity. While BMI doesn't measure body fat directly, research has shown that BMI is moderately correlated with more direct measures of body fat.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. For most adults, an ideal BMI is in the 18.5 to 24.9 range.

5. Frequently Asked Questions (FAQ)

Q1: Is BMI applicable to everyone?
A: BMI may not be accurate for athletes with high muscle mass, pregnant women, the elderly, or children. Other measurements may be needed.

Q2: What are the BMI categories?
A: Underweight (BMI < 18.5), Normal weight (18.5-24.9), Overweight (25-29.9), and Obese (≥30).

Q3: How often should I check my BMI?
A: For most adults, checking BMI annually is sufficient unless you're actively trying to change your weight.

Q4: Does BMI differ for men and women?
A: The BMI calculation is the same for both sexes, though women tend to have more body fat than men at the same BMI.

Q5: What's a healthy BMI for older adults?
A: Some research suggests that for people over 65, a BMI between 23-30 may be healthier than the standard range.