BMI Calculator

Body Mass Index (BMI) calculator

Body Mass Index (BMI) is one way you can determine if your present weight is putting your health at risk. Please remember that BMI does not, however, take into account the actual amount of fat a person is carrying and therefore must be interpreted with care.

Your BMI can be calculated by taking your weight (kilograms) and dividing it by your height (metres) squared. If you know your current height and weight, you can work out which weight range you are in by using this calculator, or the chart displayed below.

Note: If you know your weight in pounds, type a '0' (zero) for 'stone' and then enter the number of pounds to get your BMI.

BMI Calculator:

My height is:
and
My weight is:
and .

BMI Chart:

BMI Chart

For BMI chart original context click here.

These are the weight ranges, set by the World Health Organisation:

  • If your BMI is less than 18.4 you are underweight for your height
  • If your BMI is between 18.5 and 24.9 you’re an ideal weight for your height
  • If your BMI is between 25 and 29.9 you’re over the ideal weight for your height
  • If your BMI is between 30 and 39.9 you are obese
  • If your BMI is over 40 you are very obese