According to the Bureau of Statistics consumer price index, the dollar experienced an average inflation rate of 5.16% per year. Prices in 2012 are 3640.7% higher than prices in 1940.

In other words, AU$100 in the year 1940 is equivalent in purchasing power to AU$3,740.74 in 2012, a difference of AU$3,640.74 over 72 years.

The inflation rate in 2012 was 1.71%.

Cumulative price change | 3640.74% |

Average inflation rate | 5.16% |

Price difference (AU$100 base) | AU$3,640.74 |

CPI in 1940 | 2.7 |

CPI in 2012 | 101 |

CPI in 2012 / CPI in 1940 * 1940 AUD value = 2012 AUD value

Then plug in historical CPI values. The Australian CPI was 2.7 in the year 1940 and 101 in 2012:

101 / 2.7 * AU$100 =

AU$100 in 1940 has the same "purchasing power" as AU$3,740.74 in 2012.

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: “AU$100 in 1940 → 2012 | Australia Inflation Calculator.” FinanceRef Inflation Calculator, Alioth Finance, 24 Mar. 2018, http://www.in2013dollars.com/1940-AUD-in-2012?amount=100.