What's your BMI?

BMI (Body Mass Index) calculates the ratio between your weight and height, providing a healthy weight range to gauge yourself against.

Medical professionals recommend a BMI of between 20 and 25 for optimum health. The World Health Organisation classifies a BMI of 25 to 30 as overweight, and over 30 as obese.

BMI is only intended as a rough guide. It cannot take body type into account or distinguish between weight associated with muscle or fat.

Use the tool below to calculate your BMI.

Your Weight

Input your weight in either stones or kilograms:
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Your Height

Input your height in either feet or metres:
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Download a full BMI chart: