AU$100 in 1931 → AU$2,300 in 1990

Australia Inflation Calculator


Australian Inflation Rate, 1931-1990 (AU$100)

According to the Bureau of Statistics consumer price index, the dollar experienced an average inflation rate of 5.46% per year. Prices in 1990 are 2200.0% higher than prices in 1931.

In other words, AU$100 in the year 1931 is equivalent in purchasing power to AU$2,300 in 1990, a difference of AU$2,200.00 over 59 years.

The inflation rate in 1990 was 7.48%.

Inflation from 1931 to 1990
Cumulative price change 2200.00%
Average inflation rate 5.46%
Price difference (AU$100 base) AU$2,200.00
CPI in 1931 2.5
CPI in 1990 57.5

AUD inflation chart from 1922 to 2017

How to calculate the inflation rate for AU$100, 1931 to 1990

This inflation calculator uses the following inflation rate formula:

CPI in 1990 / CPI in 1931 * 1931 AUD value = 1990 AUD value

Then plug in historical CPI values. The Australian CPI was 2.5 in the year 1931 and 57.5 in 1990:

57.5 / 2.5 * AU$100 = AU$2,300

AU$100 in 1931 has the same "purchasing power" as AU$2,300 in 1990.

News headlines from 1931

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

  • The Empire State Building opens in New York.
  • A railway explosion is faked by the Japanese in order to create a pretext for their Manchuria invasion.
  • Proclamation of the Chinese People's Republic by Mao Zedong.

Inflation Data Source

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.” U.S. Official Inflation Data, Alioth Finance, 18 May. 2018,

» Read more about inflation.