AU$100 in 1931 → AU$2,736.00 in 1999

Australia Inflation Calculator


Australian Inflation Rate, 1931-1999 (AU$100)

According to the Bureau of Statistics consumer price index, the dollar experienced an average inflation rate of 4.99% per year. Prices in 1999 are 2636.0% higher than prices in 1931.

In other words, AU$100 in the year 1931 is equivalent in purchasing power to AU$2,736.00 in 1999, a difference of AU$2,636.00 over 68 years.

The inflation rate in 1999 was 1.48%.

Inflation from 1931 to 1999
Cumulative price change 2636.00%
Average inflation rate 4.99%
Price difference (AU$100 base) AU$2,636.00
CPI in 1931 2.5
CPI in 1999 68.4

AUD inflation chart from 1922 to 2017

How to calculate the inflation rate for AU$100, 1931 to 1999

This inflation calculator uses the following inflation rate formula:

CPI in 1999 / CPI in 1931 * 1931 AUD value = 1999 AUD value

Then plug in historical CPI values. The Australian CPI was 2.5 in the year 1931 and 68.4 in 1999:

68.4 / 2.5 * AU$100 = AU$2,736.00

AU$100 in 1931 has the same "purchasing power" as AU$2,736.00 in 1999.

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 1999 | Australia Inflation Calculator.” U.S. Official Inflation Data, Alioth Finance, 27 May. 2018,

» Read more about inflation.