Japan is 377,873 km2, while Australia is 7,686,850 km, making Japan approximately 20 times smaller. Put another way: Japan is slightly larger than the Australian state of Victoria.
The total land and water area of Australia, including islands, is 7,686,850 sq km. The total land and water area of the United Kingdom is 244,820 sq km. This means Australia is more than 31 times the...