Typically speaking there is no such ‘Australian' size… all our products are listed in their manufactured size (the sizing used by the brand).
Above where the sizes are listed on the product page, you can click on the size profile that you are used to shopping in when placing your order (US, EURO, UK or CM). This will then automatically convert it to the size profile of the product you are purchasing runs in, in your cart (and will read differently on your order confirmation). Please view images below for an example.
Always feel free to call or email us if you want to talk through any sizing queries in more depth with one of our staff.