A simple way to find your BMI by simply entering your height and weight. The calculator accepts user input in multiple ways - Height can be entered in cm, Meters or Feet and Inches. Weight can be entered as Kg, Lbs or Stones. The results page converts the height and weight to all the other formats (e.g. enter height in cm and the results page shows as cm, meters, feet/inches and inches) and provides a BMI result based on information published by the World Health Organisation.