$100 in 2005 is worth $143.86 in 2021

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Value of $100 from 2005 to 2021

$100 in 2005 is equivalent in purchasing power to about $143.86 in 2021, an increase of $43.86 over 16 years. The dollar had an average inflation rate of 2.30% per year between 2005 and 2021, producing a cumulative price increase of 43.86%.

This means that prices in 2021 are 1.44 times as high as average prices since 2005, according to the Bureau of Statistics consumer price index.

The inflation rate in 2005 was 2.72%. The inflation rate in 2021 was 2.84%. The 2021 inflation rate is lower compared to the average inflation rate of 4.26% per year between 2021 and 2024.


Inflation from 2005 to 2021
Cumulative price change43.86%
Average inflation rate2.30%
Converted amount
$100 base
$143.86
Price difference
$100 base
$43.86
CPI in 200583.000
CPI in 2021119.400
Inflation in 20052.72%
Inflation in 20212.84%
$100 in 2005$143.86 in 2021

AUD inflation since 2005
Annual Rate, the Bureau of Statistics CPI
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Buying power of $100 in 2005

This chart shows a calculation of buying power equivalence for $100 in 2005 (price index tracking began in 1922).

For example, if you started with $100, you would need to end with $143.86 in order to "adjust" for inflation (sometimes refered to as "beating inflation").

When $100 is equivalent to $143.86 over time, that means that the "real value" of a single Australian dollar decreases over time. In other words, a dollar will pay for fewer items at the store.

This effect explains how inflation erodes the value of a dollar over time. By calculating the value in 2005 dollars, the chart below shows how $100 is worth less over 16 years.

According to the Bureau of Statistics, each of these AUD amounts below is equal in terms of what it could buy at the time:

Dollar inflation: 2005-2021
YearDollar ValueInflation Rate
2005$100.002.72%
2006$103.493.49%
2007$105.902.33%
2008$110.604.44%
2009$112.531.74%
2010$115.782.89%
2011$119.643.33%
2012$121.691.71%
2013$124.702.48%
2014$127.832.51%
2015$129.761.51%
2016$131.451.30%
2017$133.981.92%
2018$136.511.89%
2019$138.671.59%
2020$139.880.87%
2021$143.862.84%
2022$153.376.62%
2023$161.335.18%
2024$163.011.05%*
* Compared to previous annual rate. Not final. See inflation summary for latest 12-month trailing value.
Click to show 10 more rows

This conversion table shows various other 2005 amounts in 2021 dollars, based on the 43.86% change in prices:

Conversion: 2005 dollars in 2021
Initial valueEquivalent value
$1 dollar in 2005$1.44 dollars in 2021
$5 dollars in 2005$7.19 dollars in 2021
$10 dollars in 2005$14.39 dollars in 2021
$50 dollars in 2005$71.93 dollars in 2021
$100 dollars in 2005$143.86 dollars in 2021
$500 dollars in 2005$719.28 dollars in 2021
$1,000 dollars in 2005$1,438.55 dollars in 2021
$5,000 dollars in 2005$7,192.77 dollars in 2021
$10,000 dollars in 2005$14,385.54 dollars in 2021
$50,000 dollars in 2005$71,927.71 dollars in 2021
$100,000 dollars in 2005$143,855.42 dollars in 2021
$500,000 dollars in 2005$719,277.11 dollars in 2021
$1,000,000 dollars in 2005$1,438,554.22 dollars in 2021

How to calculate inflation rate for $100, 2005 to 2021

Our calculations use the following inflation rate formula to calculate the change in value between 2005 and 2021:

CPI in 2021 CPI in 2005
×
2005 AUD value
=
2021 AUD value

Then plug in historical CPI values. The Australian CPI was 83 in the year 2005 and 119.4 in 2021:

119.483
×
$100
=
$143.86

$100 in 2005 has the same "purchasing power" or "buying power" as $143.86 in 2021.

To get the total inflation rate for the 16 years between 2005 and 2021, we use the following formula:

CPI in 2021 - CPI in 2005CPI in 2005
×
100
=
Cumulative inflation rate (16 years)

Plugging in the values to this equation, we get:

119.4 - 8383
×
100
=
44%

Data source & citation

Raw data for these calculations comes from the government of Australia's annual (CPI) as provided by the Reserve Bank of Australia. The consumer price index was established in 1922 and is tracked by Australian Bureau of Statistics (ABS).

You may use the following MLA citation for this page: “$100 in 2005 → 2021 | Australia Inflation Calculator.” Official Inflation Data, Alioth Finance, 19 Apr. 2024, https://www.officialdata.org/australia/inflation/2005?amount=100&endYear=2021.

Special thanks to QuickChart for their chart image API, which is used for chart downloads.

in2013dollars.com is a reference website maintained by the Official Data Foundation.


Ian Webster

About the author

Ian Webster is an engineer and data expert based in San Mateo, California. He has worked for Google, NASA, and consulted for governments around the world on data pipelines and data analysis. Disappointed by the lack of clear resources on the impacts of inflation on economic indicators, Ian believes this website serves as a valuable public tool. Ian earned his degree in Computer Science from Dartmouth College.

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Inflation from 2005 to 2021
Cumulative price change43.86%
Average inflation rate2.30%
Converted amount
$100 base
$143.86
Price difference
$100 base
$43.86
CPI in 200583.000
CPI in 2021119.400
Inflation in 20052.72%
Inflation in 20212.84%
$100 in 2005$143.86 in 2021