Iceland is about 27 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 Iceland is approximately 103,000 sq km, making Iceland 2,604% larger than Sydney.
Tip: This to-scale comparison of Sydney vs. Iceland uses the Mercator projection, which distorts the size of regions near the poles.
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