Body Mass Index (BMI) and waist measurement can give you an idea about your health risks. These tools are only suitable for people over 18.

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  • Please enter a valid weight
  • Please enter a valid waist
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Measure your waist to get more information about your health risk.

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Your results

Your BMI

35 and above Severely Obese
30 - 34.9 Obese
25 - 29.9 Overweight
18.5 - 24.9 Healthy Weight
18.5 and under Underweight

Your BMI is --

About your BMI

A healthy weight for your height is between -- and --.

Regardless of your weight or shape, eating well and being more active will improve your health.

Your waist

102 cm and above High Risk
94 - 102 cm At Risk
94 cm and under Low Risk

Are you ready to LiveLighter?



What if my BMI and waist measurement are telling me different things?

This is relatively common. People come in all shapes and sizes. At the end of the day, eating well and being active is the most important thing. We recommend that you speak to your doctor about assessing your individual risk if you are concerned. They can do more comprehensive tests that give a better picture of your overall health.

Healthy BMI but “increased risk” waist

This is more common in older people and people with Asian or Aboriginal heritage. Waist measurement is generally a better predictor of health than BMI, so it’s likely that you’re at increased risk of some health issues. You can read more about why over here. Check out some of our tips to eat healthy and be active, and don’t hesitate to speak to your doctor about your individual health risk.

Overweight or obese BMI but “low risk” waist

This is common in people with a muscly build and people with Polynesian heritage. Waist measurement is generally a better predictor of health than BMI, so it’s uncertain whether or not you’re at increased risk of some health issues. Check out some of our tips to eat healthy and be active, and don’t hesitate to speak to your doctor about your individual health risk.

Underweight but “healthy” or “at risk” waist

Waist measurement is not a suitable measure for detecting people who are underweight. If your BMI suggests you are underweight it may be worth talking to a health professional about whether this is a health risk for you.