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: The formula divides your weight in kilograms by your height in meters squared. This provides a standardized measurement that can be compared across different heights and weights.

3. Importance of BMI Calculation

Details: BMI is a simple, inexpensive screening method for weight category—underweight, healthy weight, overweight, and obesity. While it doesn't measure body fat directly, research has shown BMI to be correlated with more direct measures of body fat.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

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

Q2: Does BMI change with age?
A: Yes, BMI ranges may differ slightly for older adults. Some experts suggest a BMI of 25-27 may be optimal for seniors.

Q3: What are the limitations of BMI?
A: BMI doesn't distinguish between muscle and fat, so athletes may have high BMI without excess fat. It also may not be accurate for pregnant women or people with edema.

Q4: How often should I check my BMI?
A: For most adults, checking every 6-12 months is sufficient unless you're actively trying to change your weight.

Q5: Should BMI be interpreted differently for men?
A: Men typically have more muscle mass than women, so BMI might slightly overestimate fatness in muscular men.