1. What is BMI?

Body Mass Index (BMI) is a simple index of weight-for-height that is commonly used to classify underweight, healthy weight, overweight and obesity in adults. It is calculated by dividing weight in kilograms by height in meters squared.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

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

Explanation: 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.

3. Importance of BMI Calculation

Details: BMI is an important screening tool for weight categories that may lead to health problems, but it is not diagnostic of body fatness or health. It helps identify potential weight problems for adults.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What are the BMI categories for adults?
A: Underweight (BMI < 18.5), Healthy weight (18.5-24.9), Overweight (25-29.9), Obese (30 or higher).

Q2: Is BMI accurate for everyone?
A: BMI may overestimate body fat in athletes and those with muscular build, and underestimate it in older persons who have lost muscle mass.

Q3: How often should I check my BMI?
A: For most adults, checking BMI annually is sufficient unless you're actively trying to lose or gain weight.

Q4: Does BMI apply to children?
A: BMI is calculated differently for children and teens, taking into account age and sex-specific percentiles.

Q5: What are healthy BMI ranges for older adults?
A: Some research suggests that for adults over 65, a BMI between 23-29 may be healthier than lower BMIs.