What is the currency for Australia that 1 dollar in the US?

If I understand your question correctly Australia uses the Australian Dollar. It is the third most traded currency in the world.

Australian notes are made by an Australian invented process, using a polymer. That technology is now being used in currencies around the world. The notes come in denominations of A$5, 10, 20,50 and 100 dollars.

Australian coinage comes in A$2, A$1, fifty cents, twenty cents, ten cents, and five cent designs. The coinage is designed by Her Majesty Queen Elizabeth's jeweller and produced by the Royal Australian Mint in Canberra, ACT, (Australian Capital Territory), the nation's capital.