What is the Australian size for American size 30?

A waist size-30 inches in the US is a waist size-96 centimeters in Australia. In the USA a size-12 dress or blouse is a size-16 in Australia. Shoe sizes in Australia run .5-inches larger than in the USA, so if you were a size 8 in US size, you would be a size 8.5 in Australian size.