Calculate your body mass index (BMI) for adults
1) Check the BMI of an adult aged 18 and over
2) You should not use this tool to diagnose any symptoms. If you are worried about your weight, contact your local pharmacist or GP surgery
3) You should not use this tool if you are pregnant.
4) Have been diagnosed with an eating disorder, or think you may have one

What your result means
A higher BMI increases the chance of developing long-term conditions, such as type 2 diabetes and heart disease.
The BMI calculation is just one measure of health. It cannot tell the difference between muscle and fat.
For example, if you have a lot of muscle, you may be classed as overweight or obese despite having low body fat.
This is why you may get a better idea of your overall health from measuring your waist.