Which is bigger Russia or Australia?

Russia is the largest country in the world, with a total area of 17,075,400 square kilometres (6,612,100 square miles).

Australia is the sixth largest country in the world, with a total area of 7,692,024 square kilometres (2,970,284 square miles).

So, Russia is bigger than Australia by 11.3 million square kilometers or about 1.4 times the size.