BMI Calculator

BMI Calculator

What does BMI mean?

Body Mass Index (BMI) provides an estimation of whether a person is underweight, overweight, or an ideal weight. Weight outside of the ideal range may increase health risks.

Limitations of BMI

BMI does not provide information about body composition and therefore does not apply to pregnant women, children, some ethnic groups, or those with an athletic build. Age will also influence readings.

How do I calculate BMI?

Select gender and preferred unit of measurement using the BMI calculator below. Then use the sliders to enter height and weight. Click on 'calculate' to work out BMI and review the guidance on what the result could mean.

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Measuring System

Height in cms:
Height in feet / inches:
/
Weight in kgs:
Weight in Pounds:
calculateButton
maleNormal maleThin maleOverweight maleObese femaleNormal femaleThin femaleOverweight femaleObese

Recalculate by adjusting the sliders

YOUR RESULTS
Your BMI {{bmiValue}}
Suggested Healthy Weight Range {{weightMin}} - {{weightMax}} Kg {{weightMin2}} - {{weightMax2}} lb
Your Category {{category}}

Underweight(BMI less than 18.5)

You are underwight for your height. It's important to aim to keep within your healthy weight range. Being in the healthy weight range will improve your body's ability to fight off infection or illness.

Talk to your GP

If you're concerned about your weight or you are losing weight without trying, talk to your GP and Dietitian to make sure there aren't any other problems causing this.

Healthy Weight(BMI 18.5 to 25)

You are a healthy weight for your height. But we recommend that you also check your waist measurement.

Aim to keep within the ideal weight range by eating a healthy, well-balanced diet and exercising regularly. Most adults should be active for 30 minutes on most days.

For older Australians, your general health may be more important than being mildly overweight. Some researchers have suggested that a BMI range of 22-26 is acceptable for older Australians.

Overweight(BMI 25 to 30)

Being overweight increases your risk of developing coronary heart disease, as well as other health conditions such as diabetes. Keeping to a healthy weight will help you control your blood pressure and cholesterol levels. You lose weight if the amount of energy coming into your body is less than what is being used up by your body. Aim to exercise more and eat a healthy balanced diet. For individualised medical and dietary advice consult your GP and Dietitian.

Obese(BMI 30+)

As your BMI increases, your risk of developing coronary heart disease, diabetes and some cancers increases. It is important that you take steps to reduce your weight. The good news is that even losing small amounts of weight can benefit your health. You lose weight if the amount of energy coming into your body is less than what is being used up by your body. Aim to exercise more and eat healthy balanced diet.

Talk to your GP

For individualised medical and dietary advice consult your GP and Dietitian. If your BMI is over 35, your GP may advise you on additional options available to support you with losing weight.