$100 in 2018 is worth $118.01 today

The Australian dollar has lost 15% its value since 2018

Updated: November 14, 2023

$100 in 2018 is equivalent in purchasing power to about $118.01 today, an increase of $18.01 over 5 years. The dollar had an average inflation rate of 3.37% per year between 2018 and today, producing a cumulative price increase of 18.01%.

This means that today's prices are 1.18 times as high as average prices since 2018, according to the Bureau of Statistics consumer price index. A dollar today only buys 84.739% of what it could buy back then.

The inflation rate in 2018 was 1.89%. The current inflation rate compared to last year is now 6.03%. If this number holds, $100 today will be equivalent in buying power to $106.03 next year.

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Inflation from 2018 to 2023
Cumulative price change18.01%
Average inflation rate3.37%
Converted amount
$100 base
$118.01
Price difference
$100 base
$18.01
CPI in 2018113.300
CPI in 2023133.704
Inflation in 20181.89%
Inflation in 20236.03%
$100 in 2018$118.01 in 2023

AUD inflation since 2018
Annual Rate, the Bureau of Statistics CPI
Download

Buying power of $100 in 2018

This chart shows a calculation of buying power equivalence for $100 in 2018 (price index tracking began in 1922).

For example, if you started with $100, you would need to end with $118.01 in order to "adjust" for inflation (sometimes refered to as "beating inflation").

When $100 is equivalent to $118.01 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 2018 dollars, the chart below shows how $100 is worth less over 5 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: 2018-2023
YearDollar ValueInflation Rate
2018$100.001.89%
2019$101.591.59%
2020$102.470.87%
2021$105.382.84%
2022$111.305.61%
2023$118.016.03%*
* Compared to previous annual rate. Not final. See inflation summary for latest 12-month trailing value.

This conversion table shows various other 2018 amounts in today's dollars, based on the 18.01% change in prices:

Conversion: 2018 dollars today
Initial valueEquivalent value
$1 dollar in 2018$1.18 dollars today
$5 dollars in 2018$5.90 dollars today
$10 dollars in 2018$11.80 dollars today
$50 dollars in 2018$59.00 dollars today
$100 dollars in 2018$118.01 dollars today
$500 dollars in 2018$590.04 dollars today
$1,000 dollars in 2018$1,180.09 dollars today
$5,000 dollars in 2018$5,900.43 dollars today
$10,000 dollars in 2018$11,800.87 dollars today
$50,000 dollars in 2018$59,004.34 dollars today
$100,000 dollars in 2018$118,008.68 dollars today
$500,000 dollars in 2018$590,043.38 dollars today
$1,000,000 dollars in 2018$1,180,086.76 dollars today

How to calculate inflation rate for $100 since 2018

Our calculations use the following inflation rate formula to calculate the change in value between 2018 and today:

CPI today CPI in 2018
×
2018 AUD value
=
Today's value

Then plug in historical CPI values. The Australian CPI was 113.3 in the year 2018 and 133.70383 in 2023:

133.70383113.3
×
$100
=
$118.01

$100 in 2018 has the same "purchasing power" or "buying power" as $118.01 in 2023.

To get the total inflation rate for the 5 years between 2018 and 2023, we use the following formula:

CPI in 2023 - CPI in 2018CPI in 2018
×
100
=
Cumulative inflation rate (5 years)

Plugging in the values to this equation, we get:

133.70383 - 113.3113.3
×
100
=
18%

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: ā€œValue of 2018 Australian dollars today | Australia Inflation Calculator.ā€ Official Inflation Data, Alioth Finance, 28 Nov. 2023, https://www.officialdata.org/australia/inflation/2018.

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 2018 to 2023
Cumulative price change18.01%
Average inflation rate3.37%
Converted amount
$100 base
$118.01
Price difference
$100 base
$18.01
CPI in 2018113.300
CPI in 2023133.704
Inflation in 20181.89%
Inflation in 20236.03%
$100 in 2018$118.01 in 2023