What is value of 40000 aud in us currency?

To convert 40,000 AUD to USD, you need to use the current exchange rate. As of my last update, the exchange rate fluctuates around 0.70 to 0.75 USD for 1 AUD. Therefore, 40,000 AUD would be approximately 28,000 to 30,000 USD, but it's best to check a reliable financial source for the latest rates.