About the BMI Calculator

Body Mass Index (BMI) is a value derived from a person's height and weight. It's a widely used indicator to determine whether a person has a healthy body weight for their height.

BMI Categories

BMI Range	Weight Status
Below 18.5	Underweight
18.5 - 24.9	Normal weight
25.0 - 29.9	Overweight
30.0 - 34.9	Obesity Class I
35.0 - 39.9	Obesity Class II
40.0 and above	Obesity Class III

How BMI is Calculated

• Metric Formula: BMI = weight(kg) / height(m)²
• Imperial Formula: BMI = 703 × weight(lb) / height(in)²

Limitations of BMI

While BMI is a useful tool for estimating healthy body weight, it does have limitations:

• It doesn't account for muscle mass, bone density, or overall body composition
• Athletes with high muscle mass may have a higher BMI despite having a healthy body composition
• Elderly people may have a normal BMI despite having less muscle and more fat
• BMI may not be accurate for pregnant or breastfeeding women
• BMI calculations may need adjustments for certain ethnic groups

Always consult with a healthcare provider for a comprehensive assessment of your health and weight status.