Heard Island and McDonald Islands is about 1.4 times smaller than Isle of Man.

Isle of Man is approximately 572 sq km, while Heard Island and McDonald Islands is approximately 412 sq km, making Heard Island and McDonald Islands 72.03% the size of Isle of Man.
Tip: This to-scale comparison of Isle of Man 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. Isle of Man

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