Heard Island and McDonald Islands is about 22 times smaller than Puerto Rico.

Puerto Rico is approximately 9,104 sq km, while Heard Island and McDonald Islands is approximately 412 sq km, making Heard Island and McDonald Islands 4.53% the size of Puerto Rico.
Tip: This to-scale comparison of Puerto Rico 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. Puerto Rico

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