1. What is BMI?

Body Mass Index (BMI) is a value derived from the mass and height of a person. It provides a simple numeric measure of a person's thickness or thinness, allowing health professionals to discuss weight problems more objectively with their patients.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

• \( weight \) — Weight in pounds (lbs)
• \( height \) — Height in inches (feet × 12 + inches)
• \( 703 \) — Conversion factor (kg/m² to lbs/in²)

Explanation: The formula calculates body mass divided by the square of body height to categorize weight status.

3. Importance of BMI Calculation

Details: BMI is a simple screening tool for weight categories that may lead to health problems. It helps identify potential weight issues in adults.

4. Using the Calculator

Tips: Enter weight in pounds, height in feet and inches. All values must be valid (weight > 0, height > 0 inches).

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 athletes and underestimate it in older persons with lost muscle mass.

Q3: Why use feet and inches instead of just inches?
A: Feet and inches is a more common way for people to think about and measure their height.

Q4: What's a healthy BMI range?
A: For most adults, a healthy BMI is between 18.5 and 24.9.

Q5: Should BMI be the only measure of health?
A: No, BMI should be considered along with other measurements like waist circumference and body composition.