AU$100 in 1931 → AU$3,972 in 2011

Australia Inflation Calculator


Australian Inflation Rate, 1931-2011 (AU$100)

According to the Bureau of Statistics consumer price index, the dollar experienced an average inflation rate of 4.71% per year. Prices in 2011 are 3872.0% higher than prices in 1931.

In other words, AU$100 in the year 1931 is equivalent in purchasing power to AU$3,972 in 2011, a difference of AU$3,872.00 over 80 years.

The inflation rate in 2011 was 3.33%.

Inflation from 1931 to 2011
Cumulative price change 3872.00%
Average inflation rate 4.71%
Price difference (AU$100 base) AU$3,872.00
CPI in 1931 2.5
CPI in 2011 99.3

AUD inflation chart from 1922 to 2017

How to calculate the inflation rate for AU$100, 1931 to 2011

This inflation calculator uses the following inflation rate formula:

CPI in 2011 / CPI in 1931 * 1931 AUD value = 2011 AUD value

Then plug in historical CPI values. The Australian CPI was 2.5 in the year 1931 and 99.3 in 2011:

99.3 / 2.5 * AU$100 = AU$3,972

AU$100 in 1931 has the same "purchasing power" as AU$3,972 in 2011.

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 2011 | Australia Inflation Calculator.” U.S. Official Inflation Data, Alioth Finance, 23 May. 2018,

» Read more about inflation.