Bmi Calculator Formula

BMI Formula:

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

Body Mass Index (BMI):

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1. What is BMI?

Body Mass Index (BMI) is a simple calculation using a person's height and weight to assess body fatness. It's a widely used screening tool to identify potential weight problems in adults.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

\[ BMI = \frac{weight\ (kg)}{height^2\ (m)} \]

Where:

\( weight \) — Body weight in kilograms
\( height \) — Height in meters

Explanation: The formula divides weight by the square of height to account for the fact that weight increases with the square of height.

3. Importance of BMI Calculation

Details: BMI provides a quick assessment of weight status that correlates with body fat and health risks. It helps identify potential weight-related health problems.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. For pounds and inches, convert first (1 kg = 2.2 lbs, 1 m = 39.37 inches).

5. Frequently Asked Questions (FAQ)

Q1: What are the BMI categories?
A: Underweight (<18.5), Normal (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 with lost muscle mass.

Q3: How often should I check my BMI?
A: Periodic checks (every 6-12 months) can help track changes, but focus on overall health more than the number.

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

Q5: What's a healthy BMI range?
A: For most adults, 18.5-24.9 is considered healthy, but individual factors matter.