100 USD to AUD
US Dollar to Australian Dollar · Live conversion
100 US Dollar (USD) equals approximately 139.4856 Australian Dollar (AUD) at today's exchange rate.
1 USD = 1.3949 AUD · Updated 2026-09-03 · Mid-market rate
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About the USD/AUD exchange rate
The USD/AUD exchange rate tells you how many Australian Dollar (AUD) you receive for one US Dollar (USD). On this page you can see the live rate, a historical chart, and convert any amount between the two currencies.
US Dollar (USD) is the currency of United States, issued by the Federal Reserve. Australian Dollar (AUD) is the currency of Australia, issued by the Reserve Bank of Australia.
Exchange rates fluctuate based on supply and demand, interest-rate differentials, inflation, trade balances and geopolitical events. The mid-market rate shown here is a fair reference rate.