Calculators

BMI (Body Mass Index) Calculator

This calculator determines your Body Mass Index, based off your weight, and height. Please fill out your “Weight” and “Height” in the below fields, then hit “Calculate BMI Information” to see your BMI and your optimal weight range.

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About Your Results

Body mass index (BMI) is an estimate of body fat based on height and weight. While finding your BMI indicates if health advice should be sought out, it is an estimate and does not differentiate between body fat and muscle mass or between age, gender or ethnicity. It is recommended that you check your BMI as well as your Waist-Hip Ratio, and then get in touch with Dr Watson to find out what the results mean for you personally.

Morbidly Obese

Weight is very likely to be impacting normal body function and seriously affecting health.

Obese

Weight is very likely to be impacting normal body function and affecting health.

Overweight

Weight is likely to be impacting normal body function and affecting health.

Healthy

Weight is not likely to be impacting body function and health.

Underweight

Weight may be too low for regular body function and may indicate health problems associated with malnutrition.

If you are overweight (BMI over 25) you may develop:

  • Cardiovascular (heart and blood circulation) disease
  • Gall bladder disease
  • High blood pressure (hypertension)
  • Non-insulin dependent diabetes mellitus
  • Osteoarthritis – this is induced by the excess weight of obesity and can be a major problem. If inadequately managed it can be a barrier to adequate weight loss.
  • Certain types of cancer, i.e. breast, colon, endometrium and prostate.
  • Social implications that are often neglected.

If you are underweight (BMI less than 20) you may develop:

  • Malnourishment
  • Compromised immune function
  • Respiratory disease
  • Tuberculosis (an infection of the lung)
  • Digestive (stomach) disease
  • Cancer
  • Osteoporosis.