$1 in 1975 is worth $0.75 in 1973

Value of $1 from 1975 to 1973

According to the Bureau of Statistics consumer price index, prices in 1973 are 25% lower than average prices since 1975. The Australian dollar experienced an average inflation rate of 15.47% per year during this period, causing the real value of a dollar to decrease.

In other words, $1 in 1975 is equivalent in purchasing power to about $0.75 in 1973, a difference of $-0.25 over 2 years.

The 1973 inflation rate was 9.09%. The inflation rate in 1975 was 15.11%. The 1975 inflation rate is higher compared to the average inflation rate of 4.52% per year between 1975 and 2020.


Inflation from 1975 to 1973
Cumulative price change -25.00%
Average inflation rate 15.47%
Converted amount ($1 base) $0.75
Price difference ($1 base) $-0.25
CPI in 1975 16.000
CPI in 1973 12.000
Inflation in 1973 9.09%
Inflation in 1975 15.11%

AUD Inflation since 1922
Annual Rate, the Bureau of Statistics CPI
Download

Buying power of $1 in 1973

This chart shows a calculation of buying power equivalence for $1 in 1973 (price index tracking began in 1922).

For example, if you started with $1, you would need to end with $0.75 in order to "adjust" for inflation (sometimes refered to as "beating inflation").

When $1 is equivalent to $0.75 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 $1 is worth less over 2 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: 1973-1975
Year Dollar Value Inflation Rate
1973 $1.00 9.09%
1974 $1.16 15.83%
1975 $1.33 15.11%
1976 $1.51 13.13%
1977 $1.69 12.15%
1978 $1.83 7.88%
1979 $1.99 9.13%
1980 $2.20 10.46%
1981 $2.41 9.47%
1982 $2.68 11.07%
1983 $2.95 10.28%
1984 $3.07 3.95%
1985 $3.27 6.52%
1986 $3.57 9.18%
1987 $3.87 8.41%
1988 $4.15 7.33%
1989 $4.46 7.43%
1990 $4.79 7.48%
1991 $4.94 3.13%
1992 $4.99 1.01%
1993 $5.08 1.67%
1994 $5.18 1.97%
1995 $5.42 4.67%
1996 $5.56 2.62%
1997 $5.58 0.30%
1998 $5.62 0.75%
1999 $5.70 1.48%
2000 $5.96 4.53%
2001 $6.22 4.34%
2002 $6.41 3.08%
2003 $6.58 2.73%
2004 $6.73 2.28%
2005 $6.92 2.72%
2006 $7.16 3.49%
2007 $7.33 2.33%
2008 $7.65 4.44%
2009 $7.78 1.74%
2010 $8.01 2.89%
2011 $8.28 3.33%
2012 $8.42 1.71%
2013 $8.63 2.48%
2014 $8.84 2.51%
2015 $8.98 1.51%
2016 $9.09 1.30%
2017 $9.27 1.92%
2018 $9.38 1.26%
2019 $9.56 1.90%
2020 $9.74 1.90%*
* Compared to previous annual rate. Not final. See inflation summary for latest 12-month trailing value.

This conversion table shows various other 1973 amounts in 1975 dollars, based on the -25.00% change in prices:

Conversion Table: Value of a dollar in 1975
Initial value Equivalent value
$1 dollar in 1973 $1.33 dollars in 1975
$5 dollars in 1973 $6.67 dollars in 1975
$10 dollars in 1973 $13.33 dollars in 1975
$50 dollars in 1973 $66.67 dollars in 1975
$100 dollars in 1973 $133.33 dollars in 1975
$500 dollars in 1973 $666.67 dollars in 1975
$1,000 dollars in 1973 $1,333.33 dollars in 1975
$5,000 dollars in 1973 $6,666.67 dollars in 1975
$10,000 dollars in 1973 $13,333.33 dollars in 1975
$50,000 dollars in 1973 $66,666.67 dollars in 1975
$100,000 dollars in 1973 $133,333.33 dollars in 1975
$500,000 dollars in 1973 $666,666.67 dollars in 1975
$1,000,000 dollars in 1973 $1,333,333.33 dollars in 1975

How to Calculate Inflation Rate for $1, 1973 to 1975

Our calculations use the following inflation rate formula to calculate the change in value between 1973 and 1975:

CPI in 1973 CPI in 1975
×
1975 AUD value
=
1973 AUD value

Then plug in historical CPI values. The Australian CPI was 16 in the year 1975 and 12 in 1973:

1216
×
$1
=
$0.75

$1 in 1975 has the same "purchasing power" or "buying power" as $0.75 in 1973.

To get the total inflation rate for the 2 years between 1973 and 1975, we use the following formula:

CPI in 1973 - CPI in 1975CPI in 1975
×
100
=
Cumulative inflation rate (2 years)

Plugging in the values to this equation, we get:

12 - 1616
×
100
=
-25%

News headlines from 1973

Politics and news often influence economic performance. Here's what was happening at the time:

  • Margaret Thatcher becomes leader of the British Conservative Party, after defeating Edward Heath.
  • Ethiopia abrogates its 3,000-year-old monarchy.
  • Bill Gates and Paul Allen found Microsoft.
  • The US signals the beginning of the end of its involvement Vietnam, after it begins to evacuate its citizens from Saigon.
  • Gough Whitlam is removed by Governor General Sir John Kerr: the first time an elected Prime Minister had been deposed in 200 years (Australia).

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: “$1 in 1975 → 1973 | Australia Inflation Calculator.” Official Inflation Data, Alioth Finance, 12 Aug. 2020, https://www.officialdata.org/1975-AUD-in-1973?amount=1.

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.

Email · LinkedIn · Twitter


» Read more about inflation and investment.

Inflation from 1975 to 1973
Cumulative price change -25.00%
Average inflation rate 15.47%
Converted amount ($1 base) $0.75
Price difference ($1 base) $-0.25
CPI in 1975 16.000
CPI in 1973 12.000
Inflation in 1973 9.09%
Inflation in 1975 15.11%