BMI Calculator
Body Mass Index (BMI) is a quick way to check whether your weight is in a healthy range for your height.
Enter weight in kilograms and height in centimetres.
BMI categories (WHO)
| BMI | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 – 24.9 | Normal weight |
| 25.0 – 29.9 | Overweight |
| 30.0 and above | Obese |
How BMI is calculated
Metric: BMI = weight (kg) ÷ height (m)². Imperial: BMI = 703 × weight (lb) ÷ height (in)². BMI is a screening tool, not a diagnosis — very muscular people can have a high BMI while being healthy. For a fuller picture, try our body fat calculator.
For general information only — not medical advice.