BMI = Weight in kilograms ÷ Height in square meters
If the result is less than 20, the weight in below normal
If the result is between 20 and 25, the weight is normal
If the result is between 25 and 30, you are overweight
If the result is between 30 and 35, you are obese
If the result is between 35 and 40, you are very obese
If the result is higher than 40, you are extremely obese