1. What is BMI?

Body Mass Index (BMI) 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 health risks associated with weight.

3. Importance of BMI Calculation

Details: BMI helps identify weight categories that may lead to health problems. The NHS uses it 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 most accurate results, measure weight in the morning before eating and after using the toilet.

5. Frequently Asked Questions (FAQ)

Q1: What are the NHS BMI categories?
A: Underweight (below 18.5), Healthy weight (18.5-24.9), Overweight (25-29.9), Obese (30 and above).

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 does the NHS use BMI?
A: It's a simple, inexpensive method to screen for potential weight problems in the general population.

Q4: Should athletes worry about high BMI?
A: Athletes with high muscle mass may have high BMI without excess fat. Additional measurements may be needed.

Q5: What's next after calculating BMI?
A: If your BMI is outside the healthy range, consult your GP for further assessment and advice.