Calculate Your BMI - BMI Calculator
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.
- Please enter a valid height
- Please enter a valid weight
- Please enter a valid waist
- Please select a gender
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 --.
Please note: For some groups of people, the healthy BMI range might be higher (as for older people and people of Pacific Islander background) or lower (as for people of Asian or Aboriginal background). Click here to learn more about BMI. 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 |
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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.
Measuring your waist
- Find the top of your hip bone and the bottom of your ribs.
- Breathe out normally.
- Place the tape measure at the narrowest part between these points and wrap it around your waist.