Heard Island and McDonald Islands is about 42 times smaller than Swaziland.

Swaziland is approximately 17,364 sq km, while Heard Island and McDonald Islands is approximately 412 sq km, making Heard Island and McDonald Islands 2.37% the size of Swaziland.
Tip: This to-scale comparison of Swaziland vs. Heard Island and McDonald Islands uses the Mercator projection, which distorts the size of regions near the poles.

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