1. What Is Body Mass Index (BMI)?

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 reliable indicator of body fatness for most people and is used to screen for weight categories that may lead to health problems.

2. How Does The Calculator Work?

The calculator uses the standard BMI formula:

Where:

• \( weight \) — Body weight in kilograms (kg)
• \( height \) — Height in meters (m)

Explanation: The formula calculates your body mass index by dividing your weight in kilograms by the square of your height in meters.

3. Importance Of BMI Calculation

Details: BMI is a simple, inexpensive screening method for weight category—underweight, healthy weight, overweight, and obesity. While it doesn't measure body fat directly, research has shown that BMI correlates to more direct measures of body fat.

4. Using The Calculator

Tips: Enter your weight in kilograms, height in meters, and your age. All values must be valid (weight > 0, height > 0, age between 1-120).

5. Frequently Asked Questions (FAQ)

Q1: What is a healthy BMI range for men?
A: For adults 20 years and older, a BMI between 18.5 and 24.9 is considered normal or healthy weight.

Q2: Does BMI change with age?
A: Yes, BMI interpretations may vary slightly with age. Older adults might have different healthy ranges due to changes in body composition.

Q3: Are there limitations to BMI?
A: Yes, BMI doesn't account for muscle mass, bone density, overall body composition, and racial and sex differences.

Q4: Should athletes use BMI?
A: BMI may overestimate body fat in athletes and others who have a muscular build as it doesn't distinguish between muscle and fat.

Q5: How often should I check my BMI?
A: For most adults, checking BMI annually is sufficient unless you're actively trying to change your weight.