Calculate your Body Mass Index instantly. Free, accurate, no sign-up required.
BMI (Body Mass Index) is a numerical value calculated from your height and weight. It's used as a screening tool to identify potential weight-related health risks. BMI is calculated as: weight (kg) ÷ height (m)²
| Category | BMI Range | Health Risk |
|---|---|---|
| 🔵 Underweight | < 18.5 | Nutritional deficiencies, bone loss |
| 🟢 Normal Weight | 18.5 – 24.9 | Low health risk |
| 🟡 Overweight | 25 – 29.9 | Increased risk of some conditions |
| 🟠 Obese Class I | 30 – 34.9 | High health risk |
| 🔴 Obese Class II | 35 – 39.9 | Very high health risk |
| ⛔ Obese Class III | ≥ 40 | Extremely high health risk |