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's calculated by dividing weight in kilograms by height in meters squared.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

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

Explanation: The formula 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 important screening tool for weight categories that may lead to health problems, but it is not diagnostic of body fatness or health. It's used to identify weight problems in populations and as a starting point for discussions about weight with patients.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. For most accurate results, measure weight in the morning before eating and after using the toilet. Measure height without shoes.

5. Frequently Asked Questions (FAQ)

Q1: What are the BMI categories for adults?
A: Underweight (<18.5), Normal weight (18.5-24.9), Overweight (25-29.9), Obese (≥30).

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

Q3: What are the limitations of BMI?
A: BMI doesn't account for muscle mass, bone density, overall body composition, or racial and sex differences.

Q4: Is BMI accurate for athletes?
A: BMI may overestimate body fat in athletes and others with muscular builds, as muscle weighs more than fat.

Q5: How does BMI differ for different ethnic groups?
A: Some ethnic groups have different associations between BMI, percentage of body fat, and health risks.