1. What is BMI?

Body Mass Index (BMI) is a simple index of weight-for-height that is commonly used to classify underweight, normal weight, overweight and obesity in adults. Overweight is defined as BMI between 25-29.9 kg/m².

2. How Does the Calculator Work?

The calculator uses the BMI formula:

Where:

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

Classification:

• Underweight: BMI < 18.5
• Normal weight: BMI 18.5-24.9
• Overweight: BMI 25-29.9
• Obese: BMI ≥ 30

3. Importance of BMI Calculation

Details: BMI provides a simple numeric measure of body fatness for most people and is used to screen for weight categories that may lead to health problems.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. For height, you can convert from cm to m by dividing by 100 (e.g., 175 cm = 1.75 m).

5. Frequently Asked Questions (FAQ)

Q1: Is BMI accurate for everyone?
A: BMI may overestimate body fat in athletes and underestimate it in older people who have lost muscle mass.

Q2: Why is overweight defined as BMI 25-29.9?
A: This range indicates excess body weight that may increase health risks, though not as significantly as obesity.

Q3: Should I be concerned if my BMI is in the overweight range?
A: Overweight BMI suggests you should monitor your weight and consider lifestyle changes to prevent progression to obesity.

Q4: Are there better measures than BMI?
A: Waist circumference and body fat percentage may provide additional information about health risks.

Q5: How often should I check my BMI?
A: Periodic checks (e.g., every 3-6 months) can help track weight changes, but daily fluctuations are normal.