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

Heard Island and McDonald Islands is approximately 412 sq km, while Western Sahara is approximately 266,000 sq km, making Western Sahara 64,463% larger than Heard Island and McDonald Islands.
Tip: This to-scale comparison of Heard Island and McDonald Islands vs. Western Sahara uses the Mercator projection, which distorts the size of regions near the poles.

Compare further: Western Sahara vs. Heard Island and McDonald Islands

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