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 different weight categories.

3. Importance of BMI Calculation

Details: BMI helps identify potential weight problems that may lead to health issues. It's used to screen for weight categories that may lead to health problems, but it doesn't diagnose body fatness or health.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

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

Q2: Is BMI accurate for everyone?
A: BMI may not be accurate for athletes (high muscle mass), pregnant women, or older adults who may have lost muscle mass.

Q3: What should I do if my BMI is high?
A: Consult your GP who may consider other measurements like waist circumference and discuss lifestyle changes.

Q4: Can children use this calculator?
A: No, children need age and sex-specific BMI charts. This calculator is for adults only.

Q5: Where can I get more NHS advice?
A: Visit the NHS website for weight management advice and healthy living tips.