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 numeric value that helps categorize weight status.

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: BMI is calculated by dividing weight in kilograms by the square of height in meters.

3. Importance of BMI Calculation

Details: BMI is a simple screening tool to identify potential weight problems in adults. It helps assess whether a person is underweight, normal weight, overweight, or obese.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. All values must be valid (weight > 0, height > 0).

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: Is BMI different for women and men?
A: The calculation is the same, but healthy ranges may differ slightly due to body composition differences.

Q3: What are BMI limitations?
A: BMI doesn't distinguish between muscle and fat, so athletes may have high BMI without excess fat.

Q4: Is BMI accurate for everyone?
A: BMI may not be accurate for pregnant women, the elderly, or those with very muscular builds.

Q5: Should children use this calculator?
A: No, children need age- and sex-specific BMI percentiles rather than adult categories.