$100 in 1931 is equivalent in purchasing power to about $2,300 in 1990, an increase of $2,200.00 over 59 years. The dollar had an average inflation rate of 5.46% per year between 1931 and 1990, producing a cumulative price increase of 2,200.00%.
This means that prices in 1990 are 23.00 times as high as average prices since 1931, according to the Bureau of Statistics consumer price index.
The inflation rate in 1931 was -7.41%. The inflation rate in 1990 was 7.48%. The 1990 inflation rate is higher compared to the average inflation rate of 2.55% per year between 1990 and 2024.
Cumulative price change | 2,200.00% |
Average inflation rate | 5.46% |
Converted amount $100 base | $2,300 |
Price difference $100 base | $2,200.00 |
CPI in 1931 | 2.500 |
CPI in 1990 | 57.500 |
Inflation in 1931 | -7.41% |
Inflation in 1990 | 7.48% |
$100 in 1931 | $2,300 in 1990 |
This chart shows a calculation of buying power equivalence for $100 in 1931 (price index tracking began in 1922).
For example, if you started with $100, you would need to end with $2,300 in order to "adjust" for inflation (sometimes refered to as "beating inflation").
When $100 is equivalent to $2,300 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 1931 dollars, the chart below shows how $100 is worth less over 59 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:
This conversion table shows various other 1931 amounts in 1990 dollars, based on the 2,200.00% change in prices:
Initial value | Equivalent value |
---|---|
$1 dollar in 1931 | $23.00 dollars in 1990 |
$5 dollars in 1931 | $115.00 dollars in 1990 |
$10 dollars in 1931 | $230.00 dollars in 1990 |
$50 dollars in 1931 | $1,150.00 dollars in 1990 |
$100 dollars in 1931 | $2,300.00 dollars in 1990 |
$500 dollars in 1931 | $11,500.00 dollars in 1990 |
$1,000 dollars in 1931 | $23,000.00 dollars in 1990 |
$5,000 dollars in 1931 | $115,000.00 dollars in 1990 |
$10,000 dollars in 1931 | $230,000.00 dollars in 1990 |
$50,000 dollars in 1931 | $1,150,000.00 dollars in 1990 |
$100,000 dollars in 1931 | $2,300,000.00 dollars in 1990 |
$500,000 dollars in 1931 | $11,500,000.00 dollars in 1990 |
$1,000,000 dollars in 1931 | $23,000,000.00 dollars in 1990 |
Our calculations use the following inflation rate formula to calculate the change in value between 1931 and 1990:
Then plug in historical CPI values. The Australian CPI was 2.5 in the year 1931 and 57.5 in 1990:
$100 in 1931 has the same "purchasing power" or "buying power" as $2,300 in 1990.
To get the total inflation rate for the 59 years between 1931 and 1990, we use the following formula:
Plugging in the values to this equation, we get:
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: “1931 dollars in 1990 | Australia Inflation Calculator.” Official Inflation Data, Alioth Finance, 25 Apr. 2024, https://www.officialdata.org/1931-AUD-in-1990.
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.
Cumulative price change | 2,200.00% |
Average inflation rate | 5.46% |
Converted amount $100 base | $2,300 |
Price difference $100 base | $2,200.00 |
CPI in 1931 | 2.500 |
CPI in 1990 | 57.500 |
Inflation in 1931 | -7.41% |
Inflation in 1990 | 7.48% |
$100 in 1931 | $2,300 in 1990 |