Country size comparison
compared to
Australia is about 25 times bigger than Oman.
Oman is approximately 309,500 sq km, while Australia is approximately 7,741,220 sq km, making Australia 2,401% larger than Oman. Meanwhile, the population of Oman is ~3.8 million people (22.4 million more people live in Australia).
Compare further: Australia vs. Oman