1. What is BMI?

BMI (Body Mass Index) is a measure that uses your height and weight to determine if your weight is healthy. It's widely used in the UK and internationally 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: The formula divides your weight in kilograms by your height in meters squared to give your BMI score.

3. Importance of BMI Calculation

Details: BMI helps healthcare professionals assess whether you're underweight, normal weight, overweight or obese. In the UK, it's used to guide treatment decisions and health advice.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

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

Q2: Is BMI accurate for everyone?
A: BMI may be less accurate for athletes (muscle weighs more than fat), pregnant women, and some ethnic groups.

Q3: How often should I check my BMI?
A: For most adults, checking every 6-12 months is sufficient unless you're actively trying to change your weight.

Q4: What should I do if my BMI is high?
A: Consult your GP who may suggest lifestyle changes, further tests, or refer you to a weight management program.

Q5: Are there alternative measures to BMI?
A: Waist circumference and waist-to-hip ratio can provide additional information about health risks.