1. What is Body Mass Index?

Body Mass Index (BMI) is a measure that uses your height and weight to work out if your weight is healthy. The BMI calculation divides an adult's weight in kilograms by their height in metres squared.

2. How Does the Calculator Work?

The calculator uses the UK NHS BMI formula:

Where:

• \( weight_{kg} \) — Weight in kilograms
• \( height_{m} \) — Height in metres

BMI Categories (UK NHS):

• Below 18.5: Underweight
• 18.5 - 24.9: Normal weight
• 25 - 29.9: Overweight
• 30 and above: Obese

3. Importance of BMI Calculation

Details: BMI is a useful screening tool to identify potential weight problems in adults. However, it should be used as a starting point and not the only method for assessing healthy body weight.

4. Using the Calculator

Tips: Enter your weight in kilograms and height in metres. For accurate results, measure your height without shoes and weight with minimal clothing.

5. Frequently Asked Questions (FAQ)

Q1: Is BMI accurate for everyone?
A: BMI may not be accurate for athletes, pregnant women, children, and the elderly as it doesn't distinguish between muscle and fat mass.

Q2: What is a healthy BMI range?
A: For most adults, a BMI of 18.5 to 24.9 is considered healthy according to UK NHS guidelines.

Q3: How often should I check my BMI?
A: Regular monitoring every few months can help track changes, but focus on overall health rather than just the number.

Q4: Can BMI be used for children?
A: No, BMI calculations for children use different percentile charts that account for age and gender.

Q5: What are the limitations of BMI?
A: BMI doesn't account for muscle mass, bone density, overall body composition, or racial and sex differences.