Heard Island and McDonald Islands is about 646 times smaller than Western Sahara.

Western Sahara is approximately 266,000 sq km, while Heard Island and McDonald Islands is approximately 412 sq km, making Heard Island and McDonald Islands 0.15% the size of Western Sahara.
Tip: This to-scale comparison of Western Sahara 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. Western Sahara

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