Heard Island and McDonald Islands is about 274 times smaller than Louisiana.

Louisiana is approximately 112,825 sq km, while Heard Island and McDonald Islands is approximately 412 sq km, making Heard Island and McDonald Islands 0.37% the size of Louisiana.
Tip: This to-scale comparison of Louisiana vs. Heard Island and McDonald Islands uses the Mercator projection, which distorts the size of regions near the poles.

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