Greenland is about 5,257 times bigger than Heard Island and McDonald Islands.

Heard Island and McDonald Islands is approximately 412 sq km, while Greenland is approximately 2,166,086 sq km, making Greenland 525,649% larger than Heard Island and McDonald Islands.
Tip: This to-scale comparison of Heard Island and McDonald Islands vs. Greenland uses the Mercator projection, which distorts the size of regions near the poles.

Compare further: Greenland vs. Heard Island and McDonald Islands

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