1. What is BMI?

Body Mass Index (BMI) is a simple calculation using a person's height and weight. The formula is BMI = kg/m² where kg is a person's weight in kilograms and m² is their height in meters squared. It provides a reliable indicator of body fatness for most people.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

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

Explanation: BMI is calculated by dividing weight in kilograms by the square of height in meters.

3. Importance of BMI Calculation

Details: BMI is a simple, inexpensive screening method for weight category—underweight, healthy weight, overweight, and obesity. It's used to screen for weight categories that may lead to health problems.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. All values must be valid (weight > 0, height > 0). For older adults (65+), BMI interpretation may differ slightly from standard categories.

5. Frequently Asked Questions (FAQ)

Q1: What is a healthy BMI for a 65-year-old male?
A: For older men, a BMI between 23-29.9 is generally considered healthy, slightly higher than younger adults.

Q2: Does BMI account for muscle mass?
A: No, BMI doesn't distinguish between muscle and fat. Very muscular individuals may have a high BMI without excess fat.

Q3: Are there better measures than BMI for older adults?
A: Waist circumference and body composition analysis may provide additional useful information for seniors.

Q4: How often should I check my BMI?
A: For most people, checking every few months is sufficient unless directed otherwise by a healthcare provider.

Q5: Should BMI be interpreted differently for seniors?
A: Yes, slightly higher BMI may be beneficial for older adults as it may protect against osteoporosis and provide reserves during illness.