What $100 in 1975 was worth — measured in gold

The price of gold didn't get more expensive. The value of the Australian dollar fell.

97.9%

of the Australian dollar's value, gone — measured in gold, since 1975.
It now takes 46.9× more dollars to buy the same ounce.

In 1975, $100 bought 0.81 oz of gold at $123/oz. Held as metal, that same money is worth $4,687 at today's gold price of $5,761/oz (spot as of 2026-08-02).

Same $100. Three rulers.

Measure	$100 from 1975, today	Multiple
Official story — AU CPI (ABS via FRED)	$882	8.8×
Money created — M3 broad money	$9,811	98.1×
In gold — honest weight, valued today	$4,687	46.9×

The gap between 8.8× (CPI) and 98.1× (M3) is official inflation understating the money actually created. The gap between 98.1× and 46.9× (gold) is the flight to hard money — gold outrunning even the printing.

1975 in the fiat story

The Australian series begins where Bretton Woods ends. Through the seventies the AUD was pegged and managed while Australian CPI ran to double digits — the debasement was administered rather than traded.

Try your own numbers

The In Gold calculator runs any amount and any year — AUD from 1971, or see 1975 in USD.

← $100 in 1974 $100 in 1976 →

Method. Gold weight = amount ÷ the gold price of that year; "today" figures rebase the same amount by CPI, money supply, and gold spot. Deterministic — no estimates, no models, no AI in the number path. Annual averages. Sources: FRED CPIAUCNS, FRED M2SL, MeasuringWorth, GoldAPI live spot. Not financial advice. In Gold — the calculator · API
1971 · The Australian story · Methodology · FAQ · Glossary · USD years · AUD years