Index Body Mass Calculator

BMI Formula:

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

Body Mass Index (BMI):

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1. What is Body Mass Index?

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: BMI is calculated by dividing a person's weight in kilograms by the square of their height in meters.

3. Importance of BMI Calculation

Details: BMI is widely used as a screening tool to identify possible weight problems in adults. It helps healthcare professionals assess health risks associated with being underweight, 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). For accurate results, measure weight and height precisely.

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 be accurate for athletes, pregnant women, children, and the elderly as it doesn't distinguish between muscle and fat mass.

Q3: How often should I check my BMI?
A: For general health monitoring, checking every 3-6 months is sufficient unless directed otherwise by a healthcare provider.

Q4: Can BMI be used for children?
A: No, BMI calculations for children use different percentiles and growth charts specific to age and gender.

Q5: What are the limitations of BMI?
A: BMI doesn't account for muscle mass, bone density, overall body composition, or racial and sex differences.