See your BMI on a chart

How much should I weigh?

Check my BMI

Health risks from being overweight

These risks are associated with overweight and obese adults

Adults whose BMI is greater than 25 (overweight) or whose BMI is greater than 30 (obese) have an elevated risk for many diseases and health conditions, including,:

Explanation

B.M.I. Prime is simple way of defining a single figure that is not immedieately related to any other units of measurement, but which can quickly and easily rank a person into a category. Eg:
  • BMI Prime < 0.74 = Underweight
  • BMI Prime > 0.74 and < 1.00 = Optimal weight
  • BMI Prime > 1 = Overweight
b m i Prime is a variation of the Quetelet index. Put simply, if you have a Prime of less than 0.74, you are underweight. If your prime is more than 0.74 and less than 1.00, your weight is ideal. If your bmi prime is more than 1 you are defined as being overweight.

Formula for BMI

The formula below is used to measure BMI
  • BMI = weight(kilograms) / height2 (metres2)         (Metric Units)
  • BMI = 703 . weight(pounds) / height2 (inches2)         (Imperial Units)

BMI limitations

BMI calcs ignore variation in physical characteristics.
See wikipedia.org/wiki/Body_mass_index#Limitations for more details.