1. What is BMI?

BMI (Body Mass Index) is a measure that uses your height and weight to determine 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 NHS BMI formula for pounds and inches:

Where:

• \( weight \) — Your weight in pounds (lb)
• \( height \) — Your height in inches (in)
• \( 703 \) — Conversion factor for imperial units

Explanation: The formula calculates your weight relative to your height squared, adjusted for imperial units.

3. Importance of BMI Calculation

Details: BMI helps assess whether you're underweight, healthy weight, overweight, or obese. It's used by healthcare professionals to screen for potential health problems related to weight.

4. Using the Calculator

Tips: Enter your weight in pounds and height in inches. For accurate results, measure your height without shoes and weight with minimal 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 has limitations - it may overestimate body fat in athletes and underestimate it in older people with less muscle mass.

Q3: Should children use this calculator?
A: No, children need age and sex-specific BMI charts. This calculator is for adults only.

Q4: What's a healthy BMI for older adults?
A: For those over 65, a BMI between 23-29 may be healthier than the standard range.

Q5: Where can I get more advice about my BMI?
A: Consult your GP or visit the NHS website for personalized advice and support.