Heard Island and McDonald Islands is about 20 times bigger than Nauru.

Nauru is approximately 21 sq km, while Heard Island and McDonald Islands is approximately 412 sq km, making Heard Island and McDonald Islands 1,862% larger than Nauru.
Tip: This to-scale comparison of Nauru vs. Heard Island and McDonald Islands uses the Mercator projection, which distorts the size of regions near the poles.
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