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BMI Calculator: Health Metrics Explained

May 25, 2026 4 min read

What is BMI?

Body Mass Index (BMI) is a simple numerical value calculated from your height and weight. It provides a quick estimate of whether you have a healthy body weight for your height.

BMI = Weight (kg) / Height (m)²

BMI Categories

Underweight
BMI: Below 18.5
Normal weight
BMI: 18.5 - 24.9
Overweight
BMI: 25.0 - 29.9
Obese
BMI: 30.0 and above

Limitations of BMI

BMI does not account for muscle mass, bone density, age, or gender. Athletes may have a high BMI but low body fat. Always consult a healthcare professional for a complete health assessment.