Nauru is about 580 times smaller than Vanuatu.

Vanuatu is approximately 12,189 sq km, while Nauru is approximately 21 sq km, making Nauru 0.17% the size of Vanuatu. Meanwhile, the population of Vanuatu is ~308,043 people (298,232 fewer people live in Nauru).
Tip: This to-scale comparison of Vanuatu vs. Nauru uses the Mercator projection, which distorts the size of regions near the poles.
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