Heard Island and McDonald Islands is about 269 times smaller than Bulgaria.

Bulgaria is approximately 110,879 sq km, while Heard Island and McDonald Islands is approximately 412 sq km, making Heard Island and McDonald Islands 0.37% the size of Bulgaria.
Tip: This to-scale comparison of Bulgaria vs. Heard Island and McDonald Islands uses the Mercator projection, which distorts the size of regions near the poles.

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