Tunisia is about 397 times bigger than Heard Island and McDonald Islands.

Heard Island and McDonald Islands is approximately 412 sq km, while Tunisia is approximately 163,610 sq km, making Tunisia 39,611% larger than Heard Island and McDonald Islands.
Tip: This to-scale comparison of Heard Island and McDonald Islands vs. Tunisia uses the Mercator projection, which distorts the size of regions near the poles.

Compare further: Tunisia vs. Heard Island and McDonald Islands

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