$100 in 1973 is worth $1,032.50 today

The Australian dollar has lost 90% its value since 1973

Updated: August 10, 2022

$100 in 1973 is equivalent in purchasing power to about $1,032.50 today, an increase of $932.50 over 49 years. The dollar had an average inflation rate of 4.88% per year between 1973 and today, producing a cumulative price increase of 932.50%.

This means that today's prices are 10.33 times higher than average prices since 1973, according to the Bureau of Statistics consumer price index. A dollar today only buys 9.685% of what it could buy back then.

The inflation rate in 1973 was 9.09%. The current inflation rate compared to last year is now 3.77%. If this number holds, $100 today will be equivalent in buying power to $103.77 next year.


Inflation from 1973 to 2022
Cumulative price change932.50%
Average inflation rate4.88%
Converted amount ($100 base)$1,032.50
Price difference ($100 base)$932.50
CPI in 197312.000
CPI in 2022123.900
Inflation in 19739.09%
Inflation in 20223.77%
$100 in 1973$1,032.50 in 2022

AUD inflation since 1973
Annual Rate, the Bureau of Statistics CPI
Download

Buying power of $100 in 1973

This chart shows a calculation of buying power equivalence for $100 in 1973 (price index tracking began in 1922).

For example, if you started with $100, you would need to end with $1,032.50 in order to "adjust" for inflation (sometimes refered to as "beating inflation").

When $100 is equivalent to $1,032.50 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 1973 dollars, the chart below shows how $100 is worth less over 49 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: 1973-2022
YearDollar ValueInflation Rate
1973$100.009.09%
1974$115.8315.83%
1975$133.3315.11%
1976$150.8313.13%
1977$169.1712.15%
1978$182.507.88%
1979$199.179.13%
1980$220.0010.46%
1981$240.839.47%
1982$267.5011.07%
1983$295.0010.28%
1984$306.673.95%
1985$326.676.52%
1986$356.679.18%
1987$386.678.41%
1988$415.007.33%
1989$445.837.43%
1990$479.177.48%
1991$494.173.13%
1992$499.171.01%
1993$507.501.67%
1994$517.501.97%
1995$541.674.67%
1996$555.832.62%
1997$557.500.30%
1998$561.670.75%
1999$570.001.48%
2000$595.834.53%
2001$621.674.34%
2002$640.833.08%
2003$658.332.73%
2004$673.332.28%
2005$691.672.72%
2006$715.833.49%
2007$732.502.33%
2008$765.004.44%
2009$778.331.74%
2010$800.832.89%
2011$827.503.33%
2012$841.671.71%
2013$862.502.48%
2014$884.172.51%
2015$897.501.51%
2016$909.171.30%
2017$926.671.92%
2018$944.171.89%
2019$959.171.59%
2020$967.500.87%
2021$995.002.84%
2022$1,032.503.77%*
* Compared to previous annual rate. Not final. See inflation summary for latest 12-month trailing value.
Click to show 43 more rows

This conversion table shows various other 1973 amounts in today's dollars, based on the 932.50% change in prices:

Conversion: 1973 dollars today
Initial valueEquivalent value
$1 dollar in 1973$10.33 dollars today
$5 dollars in 1973$51.63 dollars today
$10 dollars in 1973$103.25 dollars today
$50 dollars in 1973$516.25 dollars today
$100 dollars in 1973$1,032.50 dollars today
$500 dollars in 1973$5,162.50 dollars today
$1,000 dollars in 1973$10,325.00 dollars today
$5,000 dollars in 1973$51,625.00 dollars today
$10,000 dollars in 1973$103,250.00 dollars today
$50,000 dollars in 1973$516,250.00 dollars today
$100,000 dollars in 1973$1,032,500.00 dollars today
$500,000 dollars in 1973$5,162,500.00 dollars today
$1,000,000 dollars in 1973$10,325,000.00 dollars today

How to calculate inflation rate for $100 since 1973

Our calculations use the following inflation rate formula to calculate the change in value between 1973 and today:

CPI today CPI in 1973
×
1973 AUD value
=
Today's value

Then plug in historical CPI values. The Australian CPI was 12 in the year 1973 and 123.9 in 2022:

123.912
×
$100
=
$1,032.50

$100 in 1973 has the same "purchasing power" or "buying power" as $1,032.50 in 2022.

To get the total inflation rate for the 49 years between 1973 and 2022, we use the following formula:

CPI in 2022 - CPI in 1973CPI in 1973
×
100
=
Cumulative inflation rate (49 years)

Plugging in the values to this equation, we get:

123.9 - 1212
×
100
=
933%

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: “Value of 1973 Australian dollars today | Australia Inflation Calculator.” Official Inflation Data, Alioth Finance, 11 Aug. 2022, https://www.officialdata.org/australia/inflation/1973.

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 1973 to 2022
Cumulative price change932.50%
Average inflation rate4.88%
Converted amount ($100 base)$1,032.50
Price difference ($100 base)$932.50
CPI in 197312.000
CPI in 2022123.900
Inflation in 19739.09%
Inflation in 20223.77%
$100 in 1973$1,032.50 in 2022