Calculate your Body Mass Index and find your healthy weight range instantly.
Your Details
♂Male
♀Female
25 yrs
170 cm
cm
70 kg
kg
Your BMI
0.0
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BMI Scale
UnderweightNormalOverweightObese
Healthy Range
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Ideal Weight
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To Gain/Lose
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Category
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💚 Health Insights
About This BMI Calculator Australia
This free BMI (Body Mass Index) calculator estimates your BMI and healthy weight range based on your height and weight. It is designed for Australian adults.
BMI is a widely used screening tool to assess whether an adult is at a healthy weight for their height. While it has limitations, it provides a useful starting point for understanding your weight status.
Understanding Your BMI Result
BMI ranges: Under 18.5 = Underweight. 18.5-24.9 = Healthy weight. 25-29.9 = Overweight. 30 and above = Obese. These are population-level guidelines. Your doctor can give you personalised advice based on your full health picture.
Frequently Asked Questions
Is BMI an accurate measure of health?+
BMI is a useful screening tool but has limitations. It does not account for muscle mass, bone density, age, sex or ethnicity. Athletes may have high BMIs despite being very healthy.
What is a healthy BMI for Australians?+
A healthy BMI is generally considered 18.5 to 24.9. However, some research suggests optimal BMI may vary by age and ethnicity.
Can BMI predict health outcomes?+
At population level, BMI is associated with health risks. At the individual level, other factors like fitness, diet, blood pressure and cholesterol are more reliable health indicators.
Is BMI different for children?+
Yes — for children and teenagers, BMI is interpreted using age and sex-specific charts rather than the standard adult ranges.
Should I see a doctor about my BMI?+
If your BMI is outside the healthy range, speaking with your GP is a good step. They can provide personalised advice based on your full health profile.