1. What is BMI?

BMI (Body Mass Index) 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:

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

Explanation: The formula divides your weight by the square of your height to give a standardized measure of body weight relative to height.

3. Importance of BMI Calculation

Details: BMI is used to screen for weight categories that may lead to health problems. It's a simple, inexpensive method of classifying underweight, normal weight, overweight and obesity.

4. Using the Calculator

Tips: Enter your weight in kilograms and height in meters. For most accurate results, measure your height without shoes and weight in light clothing.

5. Frequently Asked Questions (FAQ)

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

Q2: Is BMI accurate for everyone?
A: BMI may overestimate body fat in athletes and underestimate it in older people who have lost muscle mass.

Q3: Why doesn't this calculator use age?
A: The standard BMI calculation doesn't factor in age. BMI interpretation is the same for adults of all ages.

Q4: What's a healthy BMI range?
A: For most adults, 18.5 to 24.9 is considered healthy. However, individual circumstances may vary.

Q5: Should children use this calculator?
A: No, children and teens need BMI calculators that account for age and sex-specific percentiles.