Iran is about 4.7 times smaller than Australia.

Australia is approximately 7,741,220 sq km, while Iran is approximately 1,648,195 sq km, making Iran 21.29% the size of Australia. Meanwhile, the population of Australia is ~26.1 million people (60.6 million more people live in Iran).
This to-scale comparison of Australia vs. Iran uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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