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

Bahrain is approximately 760 sq km, while Heard Island and McDonald Islands is approximately 412 sq km, making Heard Island and McDonald Islands 54.21% the size of Bahrain.
Tip: This to-scale comparison of Bahrain 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. Bahrain

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