How much is 19.99usd dollars in austerlia?

To convert 19.99 USD to AUD, you need to use the current exchange rate, which fluctuates. As of my last update, the exchange rate was approximately 1 USD to 1.50 AUD, so 19.99 USD would be roughly 29.99 AUD. However, for an accurate conversion, please check a reliable financial news source or currency converter for the latest rates.