Austria is about 22 times bigger than Sydney.

Sydney (the 30 councils of metropolitan Sydney, without the Blue Mountains, Hawkesbury, Wollondilly and the Central Coast) is approximately 3,810 sq km, while Austria is approximately 83,871 sq km, making Austria 2,101% larger than Sydney.
Tip: This to-scale comparison of Sydney vs. Austria uses the Mercator projection, which distorts the size of regions near the poles.
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