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. It's the most widely used method to check if you're a healthy weight in the UK.

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 you're underweight, healthy weight, overweight, or obese.

3. Importance of BMI Calculation

Details: BMI helps healthcare professionals assess weight-related health risks. It's used to screen for weight categories that may lead to health problems.

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 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 has limitations - it may not be accurate for athletes (high muscle mass), pregnant women, or the elderly.

Q3: What's a healthy BMI in the UK?
A: For most adults, 18.5 to 24.9 is considered healthy. The NHS uses these ranges to assess healthy weight.

Q4: Should children use this calculator?
A: No, children need BMI-for-age percentiles as their body composition changes with growth.

Q5: What if my BMI is high?
A: Consult your GP who may consider other measurements like waist circumference and overall health assessment.