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 screening tool to identify potential weight problems in adults.

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 give an indication of whether you're a healthy weight for your height.

3. Importance of BMI Calculation

Details: BMI helps identify weight categories that may lead to health problems. While not a direct measure of body fat, it correlates with more direct measures of body fat.

4. Using the Calculator

Tips: Enter your weight in kilograms and height in meters. For height, you can convert from cm to m by dividing by 100 (e.g., 175cm = 1.75m).

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 (muscle weighs more than fat), pregnant women, or people with certain medical conditions.

Q3: Should children use this calculator?
A: No, children need age and sex-specific BMI calculations as their bodies change rapidly.

Q4: What's a healthy BMI range?
A: For most adults, 18.5 to 24.9 is considered healthy, but individual circumstances may vary.

Q5: Where can I get more advice about my BMI?
A: Consult your GP or a health professional if you're concerned about your BMI result.