1. What is BMI?

BMI (Body Mass Index) is a measure that uses your height and weight to work out if your weight is healthy. The NHS uses BMI as a simple way to assess whether someone might be underweight, healthy weight, overweight, or obese.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

• \( Weight \) — Your weight in kilograms (kg)
• \( Height \) — Your height in meters (m)

Explanation: BMI compares your weight to your height to calculate whether your weight is in a healthy range.

3. Importance of BMI Calculation

Details: BMI helps identify potential weight problems in adults. However, it's not a diagnostic tool and doesn't account for muscle mass, bone density, or overall body composition.

4. Using the Calculator

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

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 not be accurate for athletes (high muscle mass), pregnant women, or the elderly (muscle loss).

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

Q4: What should I do if my BMI is outside the healthy range?
A: Consult with your GP or a healthcare professional for personalized advice.

Q5: Where can I get more information?
A: Visit the NHS website for more details on healthy weight management.