Learn more about BMI
BMI is used as a simple tool used to estimate body fat. However, remember it is an aproximation of body fatness, as it only takes into account height and weight. It is a useful screening tool to identify whether or not a person might have a weight-related health issue.
| Category | BMI range – kg/m2 | Mass (weight) of a 1.8-metre (5 ft 11 in) person with this BMI. |
|---|---|---|
| Very severely underweight | less than 15.0 | less than 48.6 kilograms (7.65 st; 107 lb) |
| Severely underweight | from 15.0 to 16.0 | between 48.6 and 51.8 kilograms (7.65 and 8.16 st; 107 and 114 lb) |
| Underweight | from 16.0 to 18.5 | between 51.8 and 59.9 kilograms (8.16 and 9.43 st; 114 and 132 lb) |
| Normal (healthy weight) | from 18.5 to 25 | between 59.9 and 81.0 kilograms (9.43 and 12.76 st; 132 and 179 lb) |
| Overweight | from 25 to 30 | between 81.0 and 97.2 kilograms (12.76 and 15.31 st; 179 and 214 lb) |
| Obese Class I (Moderately obese) | from 30 to 35 | between 97.2 and 113.4 kilograms (15.31 and 17.86 st; 214 and 250 lb) |
| Obese Class II (Severely obese) | from 35 to 40 | between 113.4 and 129.6 kilograms (17.86 and 20.41 st; 250 and 286 lb) |
| Obese Class III (Very severely obese) | over 40 | from 129.6 kilograms (20.41 st; 286 lb) |