USD to AUD exchange rate on 2026-09-11 Closing rate1 USD = 1.3947 AUDDay-over-day change: 0.72%Previous close: 1.3847More dataLive rate & chartMonthly summaryDownload CSVAvailable daily data: 2026-03-06 – 2026-09-17 Currency guides All USD rates All AUD rates AUD To USD