Body Mass Index Formula

BMI Formula:

\[ BMI = \frac{weight}{height^2} \]

Body Mass Index (BMI):

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1. What Is Body Mass Index Formula?

Body Mass Index (BMI) is a measure of body fat based on height and weight that applies to adult men and women. It provides a simple numeric measure of a person's thickness or thinness.

2. How Does the Calculator Work?

The calculator uses the BMI formula:

\[ BMI = \frac{weight}{height^2} \]

Where:

\( weight \) — Body weight in kilograms (kg)
\( height \) — Height in meters (m)
\( BMI \) — Body Mass Index in kg/m²

Explanation: The formula calculates body mass per unit of area, providing a standardized way to assess weight status.

3. Importance of BMI Calculation

Details: BMI is widely used as a screening tool to identify potential weight problems in adults. It helps assess health risks associated with underweight, overweight, and obesity.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. Ensure accurate measurements for reliable results. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What are the BMI categories?
A: Underweight (<18.5), Normal weight (18.5-24.9), Overweight (25-29.9), Obesity (≥30).

Q2: Is BMI accurate for everyone?
A: BMI may not accurately reflect body fat in athletes, elderly, or those with high muscle mass as it doesn't distinguish between muscle and fat.

Q3: Can children use this calculator?
A: No, this calculator is for adults. Children and teens require age and sex-specific BMI percentiles.

Q4: What are the limitations of BMI?
A: BMI doesn't account for muscle mass, bone density, overall body composition, or racial and sex differences.

Q5: 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.