BMI Calculator

BMI Formula:

\[ BMI = \frac{weight}{height^2} \times 703 \]

BMI Result:

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1. What is BMI?

BMI (Body Mass Index) is a simple calculation using a person's height and weight to screen for weight categories that may lead to health problems. The formula is:

\[ BMI = \frac{weight\ (lbs)}{height^2\ (inches)} \times 703 \]

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

\[ BMI = \frac{weight}{height^2} \times 703 \]

Where:

\( weight \) — Body weight in pounds (lbs)
\( height \) — Height in inches (in)
703 — Conversion factor to adjust units

Explanation: BMI provides a simple numeric measure of a person's thickness or thinness, allowing health professionals to discuss weight problems objectively.

3. Importance of BMI Calculation

Details: BMI is a quick screening tool for weight categories that may lead to health problems. While it doesn't measure body fat directly, research has shown BMI correlates with more direct measures of body fat.

4. Using the Calculator

Tips: Enter weight in pounds and height in inches. For most adults, BMI provides a good estimate of weight-related health risks.

5. Frequently Asked Questions (FAQ)

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

Q2: Is BMI accurate for everyone?
A: BMI may overestimate body fat in athletes and underestimate it in older people who have lost muscle mass.

Q3: What's a healthy BMI?
A: For most adults, 18.5 to 24.9 is considered healthy.

Q4: Should children use this calculator?
A: No, children and teens need age- and sex-specific BMI percentiles.

Q5: What are alternatives to BMI?
A: Waist circumference, skinfold thickness measurements, and more advanced techniques like DEXA scans.