Australia is almost completely metric, people only use imperial occasionally for old recipes and the like, also we often use pounds per square inch for car tire pressure, but weather related pressure is in pascals.

Wikipedia has a surprisingly comprehensive article on Australia's metrication: https://en.wikipedia.org/wiki/Metrication_in_Australia

Also for height, quite oddly.

Pretty much exclusively metric - the only thing I use the imperial system for in Australia is clothing (34") and height (6'4")

This sounds like about the same situation as in Canada, for what it's worth: metric for everything except human measures (weight, height, clothing sizes) and some cooking.