1. What is a BMI Calculator?

Definition: This calculator estimates Body Mass Index (BMI) based on weight and height measurements.

Purpose: It helps individuals assess whether their weight is in a healthy range relative to their height.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( BMI \) — Body Mass Index (kg/m²)
• \( W \) — Weight (kilograms)
• \( H \) — Height (meters)

Explanation: The weight is divided by the square of height to determine BMI.

3. Importance of BMI Calculation

Details: BMI is a simple screening tool that may indicate whether a person is underweight, normal weight, overweight, or obese.

4. Using the Calculator

Tips: Enter your weight in kilograms and height in meters. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a healthy BMI range?
A: Generally, 18.5-24.9 is considered normal weight, below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese.

Q2: Is BMI accurate for everyone?
A: BMI is a screening tool but doesn't account for muscle mass, bone density, or fat distribution. Athletes may have high BMI without excess fat.

Q3: Can I use pounds and inches?
A: This calculator uses metric units. For imperial: BMI = (weight in lbs × 703) / (height in inches)².

Q4: What's better than BMI?
A: Waist circumference and body fat percentage provide more detailed information about health risks.

Q5: Should children use this calculator?
A: Children's BMI is interpreted differently using age- and sex-specific percentiles, not adult categories.