1. What is BMI?

BMI (Body Mass Index) is a measure that uses your height and weight to determine if your weight is healthy. The NHS uses BMI as a screening tool to identify potential weight problems in adults.

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 compares your weight to your height to estimate body fatness and potential health risks.

3. Importance of BMI Calculation

Details: BMI helps identify weight categories that may lead to health problems. For men, a healthy BMI is typically between 20 and 25.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. For accuracy, measure height without shoes and weight with minimal clothing.

5. Frequently Asked Questions (FAQ)

Q1: What is a healthy BMI for men?
A: For most men, 18.5-24.9 is healthy, 25-29.9 is overweight, and 30+ is obese. However, athletes may have higher BMI due to muscle mass.

Q2: Why is BMI different for men and women?
A: Men typically have more muscle mass and less body fat than women at the same BMI, but the same ranges are used for both.

Q3: When is BMI not accurate?
A: BMI may overestimate body fat in athletes and underestimate it in older people who have lost muscle mass.

Q4: What are NHS BMI categories?
A: Underweight (<18.5), Healthy weight (18.5-24.9), Overweight (25-29.9), Obese (30+).

Q5: Should I be concerned if my BMI is high?
A: Consult your GP if your BMI is outside the healthy range, especially if you have other risk factors like high blood pressure.