Hi Mason,

If you are looking or currency conversion, there are a couple of websites which offers best conversion rates. As you mentioned you need conversion from AUD to USD, below are some websites which are helpful to you:

1. https://www.fxcompar...

FXcompared.com is the leading independent comparison website for international money transfer. They offer the user choices for the best and most efficient way to transfer money internationally. FXcompared.com is owned by FX Compared Limited, a private UK company with offices in London and New York.
They offer a full range of international currencies for comparison on FXcompared.com with 93 countries covered which you can compare currency from.
Once you have registered, booked the trade and sent your funds to the money transfer provider, it typically takes between one and two days for more mainstream currencies and three days or sometimes longer for more exotic currencies.

Current conversion rate is: https://www.fxcompar...

2. http://www.xe.com/
Whether it’s for business, shopping, or travel, XE’s currency tools are FREE and easy-to-use.

I hope this helps.

Regards,
Lokesh