1. What is Body Mass Index (BMI)?

BMI is a simple index of weight-for-height that is commonly used to classify underweight, normal weight, overweight and obesity in adults. It is defined as the weight in kilograms divided by the square of the height in meters (kg/m²).

2. How Does the Calculator Work?

The calculator uses the BMI formula:

Where:

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

Explanation: The formula calculates body mass per unit of surface area, providing a standardized way to assess weight status.

3. Importance of BMI Calculation

Details: BMI is a quick screening tool for potential weight problems in adults. It helps identify individuals who may be at risk for weight-related health issues.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What are the standard BMI categories?
A: Underweight (<18.5), Normal weight (18.5-24.9), Overweight (25-29.9), Obesity (≥30).

Q2: Is BMI accurate for everyone?
A: BMI may overestimate body fat in muscular individuals and underestimate it in older people who have lost muscle mass.

Q3: How does BMI change with age?
A: For older adults (like age 70), slightly higher BMI values may be acceptable compared to younger adults.

Q4: Should BMI be used alone to assess health?
A: No, BMI should be considered along with other measurements like waist circumference and overall health assessment.

Q5: What's a healthy BMI for men aged 70?
A: For older men, a BMI between 23-29 may be more appropriate than the standard ranges, but consult a healthcare provider.