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 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 provides a simple numeric measure of a person's thickness or thinness, allowing health professionals to discuss weight problems objectively.

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 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 those with certain medical conditions.

Q3: Should children use this calculator?
A: No, children need BMI-for-age percentiles calculated differently.

Q4: What's a healthy BMI for older adults?
A: Some evidence suggests 23-27 may be healthier for those over 65 than younger adults.

Q5: Where can I get more NHS weight advice?
A: Visit the NHS Weight Loss Plan at https://www.nhs.uk