Guernsey is about 5 times smaller than Heard Island and McDonald Islands.

Heard Island and McDonald Islands is approximately 412 sq km, while Guernsey is approximately 78 sq km, making Guernsey 18.93% the size of Heard Island and McDonald Islands.
This to-scale comparison of Heard Island and McDonald Islands vs. Guernsey uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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