Heard Island and McDonald Islands is about 2.3 times bigger than Marshall Islands.

Marshall Islands is approximately 181 sq km, while Heard Island and McDonald Islands is approximately 412 sq km, making Heard Island and McDonald Islands 128% larger than Marshall Islands.
Tip: This to-scale comparison of Marshall Islands vs. Heard Island and McDonald Islands uses the Mercator projection, which distorts the size of regions near the poles.

Compare further: Heard Island and McDonald Islands vs. Marshall Islands

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