1. What is BMI?

BMI (Body Mass Index) is a measure that uses your height and weight to determine if your weight is healthy. It's widely used by UK doctors to assess weight categories that may lead to health problems.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

• \( weight \) — Body weight in kilograms
• \( height \) — Height in meters

Explanation: The formula calculates your weight in relation to your height squared, providing a standardized measure of body fatness.

3. Importance of BMI Calculation

Details: BMI is a quick screening tool for weight categories that may indicate health risks. UK doctors use it to identify potential weight-related health issues.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. For height, 1.75 would represent 1 meter and 75 centimeters.

5. Frequently Asked Questions (FAQ)

Q1: What are the UK 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 is a useful screening tool but doesn't account for muscle mass, bone density, or fat distribution. Athletes may have high BMI without excess fat.

Q3: Should children use this calculator?
A: No, children need BMI-for-age percentiles as their body composition changes with growth.

Q4: What's a healthy BMI for older adults?
A: For those over 65, a BMI between 23-29.9 may be healthier than lower ranges.

Q5: How often should I check my BMI?
A: For most adults, checking every 6-12 months is sufficient unless directed otherwise by your doctor.