Tool
BMI calculator
Body Mass Index is the ratio of weight to the square of height. It is a very simplified indicator that does not account for the proportion of muscle and fat or how weight is distributed.
General information, not a substitute for a medical examination. If you have health problems, contact your GP or the emergency line 155.
Your BMI
22.9
Category
Normal weight
WHO categories
| Category | BMI |
|---|---|
| Underweight | below 18.5 |
| Normal weight | 18.5 to 24.9 |
| Overweight | 25 to 29.9 |
| Obesity class 1 | 30 to 34.9 |
| Obesity class 2 | 35 to 39.9 |
| Obesity class 3 | 40 and above |
For athletes with a higher proportion of muscle mass, BMI often overstates the risk. In older people it tends to understate the loss of muscle mass. For a more accurate picture it helps to add waist circumference and the waist-to-hip ratio.