1. What is BMI?

Body Mass Index (BMI) is a measure that uses your height and weight to determine if your weight is healthy. The NHS BMI calculator provides a simple way to check if you're a healthy weight for your height.

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 is a useful screening tool to identify potential weight problems in adults. It can indicate whether you might be at risk of health problems associated with being underweight, overweight or obese.

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 is a healthy BMI range?
A: For most adults, 18.5 to 24.9 is considered healthy. Below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese.

Q2: Is BMI accurate for everyone?
A: BMI may not be accurate for athletes (muscle weighs more than fat), pregnant women, or the elderly who may have lost height.

Q3: Should children use this calculator?
A: No, children need age and sex-specific BMI charts as their body composition changes with growth.

Q4: What if I only know my height in cm?
A: Convert cm to meters by dividing by 100 (e.g., 175 cm = 1.75 m).

Q5: Where can I get more health advice?
A: Visit the NHS website or consult your GP for personalized health advice.