Australia - breakdown of adults by body mass index range 2018

In 2018, 6.6 million adults in Australia were considered to be overweight based on their Body Mass Index (BMI). In that year there were more Australian adults who were overweight than those who were of a normal weight range.

Breakdown of the adult population in Australia in financial year 2018, by body mass index range (in 1,000s)

Characteristic	Number of adults in thousands
Underweight	244.9
Normal range (18.50–19.99)	656.7
Normal range (20.00–24.99)	5,267.1
Overweight	6,643.9
Obesity class I	3,670.3
Obesity class II	1,431.7
Obesity class III	742.2

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Release date

December 2018

More information

Region

Australia

Survey time period

financial year 2018

Age group

18 years and older

Special properties

Australia's financial year runs from July 1 to June 30; for example, financial year 2017 starts on July 1, 2016 and ends on June 30, 2017.

Supplementary notes

Body Mass Index is derived from measured height and weight. 33.8% of respondents aged 18 years and over did not have their height, weight or both measured. For these respondents, imputation was used to obtain height, weight and BMI scores.

Underweight (less than 18.50)
Normal range (18.50–19.99)
Normal range (20.00–24.99)
Total Normal range (18.50–24.99)
Overweight (25.00–29.99)
Obesity class I (30.00–34.99)
Obesity class II (35.00–39.99)
Obesity class III (40.00 or more)
Total Obese (30.00 or more)
Total Overweight / Obese (25.00 or more)

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