Use this BMI calculator to calculate your Body Mass Index from height and weight. It works with metric and imperial units and shows your BMI category with a simple health-risk summary.
| BMI Range | Category | Health Risk |
|---|---|---|
| < 18.5 | Underweight | Possible nutritional deficiency and osteoporosis |
| 18.5 – 24.9 | Normal weight | Low risk (healthy range) |
| 25 – 29.9 | Overweight | Moderate risk of heart disease, diabetes |
| 30 – 34.9 | Obesity Class I | High risk of developing health problems |
| 35 – 39.9 | Obesity Class II | Very high risk of serious health problems |
| ≥ 40 | Obesity Class III | Extremely high risk, severe health issues |
BMI is a quick screening number used to compare body weight with height. This body mass index calculator helps you estimate whether your BMI falls in the underweight, normal, overweight, or obese range.
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