Body mass index (BMI) is a measure for indicating nutritional status in adults. It is defined as a person’s weight in kilograms divided by the square of the person’s height in meters (kg/m2).1

Select your height and weight.

cm

110 120 130 140 150 160 170 180 190 200 210

kg

30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220
24.8 Normal
Your BMI can be used as part of an assessment to see if you are at risk of undernutrition. However, it does not take into account any weight you may have lost recently. If you have any concerns about your BMI or have experienced any unintentional weight loss, you may wish to discuss it with your healthcare professional.


Date of preparation June 2020 UK-N/A-2000103