Cook Islands is about 1.8 times smaller than Heard Island and McDonald Islands.

Heard Island and McDonald Islands is approximately 412 sq km, while Cook Islands is approximately 236 sq km, making Cook Islands 57.28% the size of Heard Island and McDonald Islands.
Tip: This to-scale comparison of Heard Island and McDonald Islands vs. Cook Islands uses the Mercator projection, which distorts the size of regions near the poles.

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

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