1. What is BMI?

Body Mass Index (BMI) is a value derived from the mass and height of a person. The BMI is defined as the body mass divided by the square of the body height, and is expressed in units of kg/m².

2. How Does the Calculator Work?

The calculator uses the BMI equation:

Where:

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

Explanation: The equation calculates body mass index by dividing weight by the square of height.

3. Importance of BMI Calculation

Details: BMI provides a simple numeric measure of a person's thickness or thinness, allowing health professionals to discuss weight problems more objectively with their patients.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What is a healthy BMI range?
A: For adults, 18.5 to 24.9 is considered healthy. Below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese.

Q2: Does BMI work for athletes?
A: BMI may overestimate body fat in athletes with high muscle mass and underestimate it in older people with less muscle mass.

Q3: How does age affect BMI interpretation?
A: For older adults, the healthy BMI range may be slightly higher (up to 27) as some extra weight can be protective.

Q4: Are there better measures than BMI?
A: Waist circumference and body fat percentage may provide more accurate health assessments in some cases.

Q5: Should BMI be interpreted differently for women?
A: Women naturally have more body fat than men, but the same BMI categories apply to both genders.